Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 20 of 20

Thread: Should I be worried about "slimy" gunite boulders?

  1. Back To Top    #1
    JayBauman's Avatar
    Join Date
    Sep 2014
    Location
    Katy, TX
    Posts
    617

    Should I be worried about "slimy" gunite boulders?

    My pool was built last winter, and I started filling in early December. I have followed TFP methodologies since Day 1...I even had my TF-100 test kit before we started filling. I do the full suite of testing every Friday, and a few times a week I use the Taylor K-1000 to check chlorine (orthotolidine) and pH. Other than some pH and alkalinity excursions during the initial days right after filling, I am not aware of any time that my chemistry has been "out of whack" (according to TFP recommendations), and I've never seen my TC drop below 3. My pool has been clean and sparkly since Day 1--even my fill water was perfectly clear!

    I don't have a "traditional" in-ground pool with waterline tile; instead, I have gunite boulders that roll from my decking into the water, which make for a lagoon-type of vibe. (Check out my build thread if you want to see what I'm talking about.) Do to the design, it's hard to use my pole brush to clean the boulder waterline. Instead, I use a small hand brush and clean the waterline boulders when we're swimming. Recently, when I brush this area, I see a brief amount of brown cloud that quickly dissipates. This cloud seems to be the same color as the brownish dye in my gunite boulders. If I run my hand over some of the nooks and crannies, it can sometimes feel something a bit slimy. A few days after brushing all of this away, it seems to come back.

    So I know what you're thinking right now: "This Bauman guy is another one of those pool owners who can't possibly imagine that his pool has algae." But please hear me out...while I cannot imagine how any algae found the opportunity to take over, I am fully open to the possibility that I might be suffering from this malady. But before admitting my pool care failures to the entire world, I've been trying to self-diagnose my problems. I thought I might SLAM my pool just to be sure, but I'm not sure how I know when I'd be done since I already pass all 3 indicators:
    • My pool is currently perfectly clear
    • CC is 0 (I've never measured anything greater than 0.5)
    • Passed OCLT (I had zero loss between last night at 11:00pm and this morning at 5:00am)


    Does anybody have any idea what this could be, or is this something I shouldn't even worry about? And what would be the purpose of doing a SLAM, since I already pass the requirements?

    Oh yeah....before I forget. Here's what inquiring minds want to know:

    PARAMETER LAST MEASUREMENT TYPICAL RANGE for my Pool
    TEMP 90°F 85° - 92°F
    pH 7.5 7.5 - 7.8
    FC 15.5* 4 - 6
    CC 0 0 - 0.5
    CYA 70 60 - 80
    TA 80 70 - 80
    CH 300 275 - 300

    *I raised my FC before the OCLT. I know I wasn't at SLAM levels, but I wanted a bit more resolution during the test. Last night it took 31 drops for the vial to get completely clear, and this morning it also took 31 drops.
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

  2. Back To Top    #2
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,966

    Re: Should I be worried about "slimy" gunite boulders?

    Well let's cover the most important thing first .... that is a gorgeous pool. Wow. Okay, a couple things do come to mind (mine anyways):
    - When you do the OLCT (even though you passed), it is important to take it up to its full SLAM level to receive an accurate reading. The fact that you were not quite that high and still passed may not be a huge factor right now, but is something to keep in mind for later.
    - I have a light-brown grout line around my pool that meets-up with the flagstone I have. If I rub it, I suspect I will get some discoloration to come-off as well. I think that is normal. In addition, I have a fountain (large pot) that serves as a type of spillway into my pool. I will get a hint of green moss around that area if it stays wet. When we have our very humid TX summers, it can be more prevalent there or around my waterline in some areas.

    People with water features or rocks that are near the waterline can face challenges other don't have. At least your water chemistry does not appear to be effected, so the most important thing at this point would be continued preventive maintenance to ensure none of that slimy stuff can transfer active material to your water. The brushing is fine, and I know some people will use spray bottles with a bleach mixture to neutralize anything in those tight areas as well.

    As long as your water chemistry is good, I don't think you need to worry too much at this point other than preventive maintenance. Others may have a suggestion or two, and I hope you have a great summer.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3
    JayBauman's Avatar
    Join Date
    Sep 2014
    Location
    Katy, TX
    Posts
    617

    Re: Should I be worried about "slimy" gunite boulders?

    Quote Originally Posted by Texas Splash View Post
    Well let's cover the most important thing first .... that is a gorgeous pool. Wow. Okay, a couple things do come to mind (mine anyways):
    - When you do the OLCT (even though you passed), it is important to take it up to its full SLAM level to receive an accurate reading. The fact that you were not quite that high and still passed may not be a huge factor right now, but is something to keep in mind for later.
    - I have a light-brown grout line around my pool that meets-up with the flagstone I have. If I rub it, I suspect I will get some discoloration to come-off as well. I think that is normal. In addition, I have a fountain (large pot) that serves as a type of spillway into my pool. I will get a hint of green moss around that area if it stays wet. When we have our very humid TX summers, it can be more prevalent there or around my waterline in some areas.

    People with water features or rocks that are near the waterline can face challenges other don't have. At least your water chemistry does not appear to be effected, so the most important thing at this point would be continued preventive maintenance to ensure none of that slimy stuff can transfer active material to your water. The brushing is fine, and I know some people will use spray bottles with a bleach mixture to neutralize anything in those tight areas as well.

    As long as your water chemistry is good, I don't think you need to worry too much at this point other than preventive maintenance. Others may have a suggestion or two, and I hope you have a great summer.
    Your comments made me realize that I wasn't clear on one thing: The "slimy" feeling is below the water line. Everything above appears/feels completely clean.
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

  4. Back To Top    #4
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,966

    Re: Should I be worried about "slimy" gunite boulders?

    Hummm, that is odd. Slimy in that area (under water) would not be ideal. I know we can have algae even with no CC, and sometimes we can be mislead by an OCLT if not done properly or the counts were off - not saying your was, it just happens. I would think your OCLT would definitely show a problem with active (slimy) algae in the water. Curious, is that sliminess along the entire perimeter of your pool or does it appear isolated to just one area (i.e. due to circulation or the spa spill-over)?
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  5. Back To Top    #5

    Join Date
    Jun 2014
    Location
    Oslo
    Posts
    120

    Re: Should I be worried about "slimy" gunite boulders?

    Take a clean pipe and sample the water between the boulders. I suspect this is an area with defficient circulation and the chlorine might not be even distributed. Measure in the place where you suspect a problem.
    South of France inground rectangular 17k pool - ruber membrane. Sliding dome, black thermal blanket covering 75% of the pool surface. Aqualux 3/4Hp pump, glass media sand filter, Zodillac robot, 110W UV-c lamp, Hayward brominator, Caliente 12kW heat pump.

  6. Back To Top    #6


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: Should I be worried about "slimy" gunite boulders?

    it sounds like you are fine, I like the spray bottle of liguid chlorine.. Get in there and spray while brushing that rock line once or twice a week and call it good..

    The one thing I did notice is you are keeping your FC at the lower levels, you may want to keep them between 6 to 9 FC for 70 CYA.. When or if you drop to 4 you are below the recommended level of 5.. Pool School - Chlorine / CYA Chart

    Maybe try those 2 things and see, you have a great plan and have been doing it all correct
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  7. Back To Top    #7
    JayBauman's Avatar
    Join Date
    Sep 2014
    Location
    Katy, TX
    Posts
    617

    Re: Should I be worried about "slimy" gunite boulders?

    Quote Originally Posted by cowboycasey View Post
    it sounds like you are fine, I like the spray bottle of liguid chlorine.. Get in there and spray while brushing that rock line once or twice a week and call it good..

    The one thing I did notice is you are keeping your FC at the lower levels, you may want to keep them between 6 to 9 FC for 70 CYA.. When or if you drop to 4 you are below the recommended level of 5.. Pool School - Chlorine / CYA Chart

    Maybe try those 2 things and see, you have a great plan and have been doing it all correct
    According to the table you reference, my FC range is adequate; I have SWG. Are you telling me that this table is not correct?
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

  8. Back To Top    #8
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,200

    Re: Should I be worried about "slimy" gunite boulders?

    Quote Originally Posted by cowboycasey View Post
    it sounds like you are fine, I like the spray bottle of liguid chlorine.. Get in there and spray while brushing that rock line once or twice a week and call it good..

    The one thing I did notice is you are keeping your FC at the lower levels, you may want to keep them between 6 to 9 FC for 70 CYA.. When or if you drop to 4 you are below the recommended level of 5.. Pool School - Chlorine / CYA Chart

    Maybe try those 2 things and see, you have a great plan and have been doing it all correct

    Quote Originally Posted by JayBauman View Post
    According to the table you reference, my FC range is adequate; I have SWG. Are you telling me that this table is not correct?
    Cowboycasy and JayBauman, there are different recommendations for SWG vs manually chlorinated pools. I think Cowboycasy missed that you have a SWG. The daily target for a pool with a SWG and CYA of 70ppm is 3-5ppm FC.

    JayBauman did you turn off the SWG for the OCLT? How far below the waterline does the slimy feel extend? Do you have a lot of sunscreen users in the pool?
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

  9. Back To Top    #9

    Join Date
    Jun 2014
    Location
    Rogers, AR
    Posts
    412

    Re: Should I be worried about "slimy" gunite boulders?

    I have a much different system than you and last year was my first year with a pool so take it with a grain of salt....

    Last year I dutifully brushed my pool once a week and by the end of the week my family said my pool was slimy. This year I bought a robot and used it several times a week. My family said the pool felt much differently, almost squeaky clean and no slime. My robot didn't work out so it is sitting in the garage. Maybe those areas need more brushing?

    I was doing some research a couple of weeks ago and came across some articles on biofilms and the importance on brushing and now I run the brush over the pool a couple of times of week and even with no robot for five weeks now I have had no slime.
    16x32 IG rectangular 21,800k new vinyl liner 2014, Triton II TR 50 sand Filter, Pentair 3/4 hsp whisperflow pump, 3 returns, TF100 test kit w/speedstir. Maytronics s 300i robot.

  10. Back To Top    #10
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,998

    Re: Should I be worried about "slimy" gunite boulders?

    Hi Jay,
    My bet is that it is algae getting a little start occasionally. I've had the slimy feel a few times. Probably due to slightly less circulation in the area. Brushing that area a couple of times a week will probably fix it. I have some rocks at the waterline and that is where my algae grows, in the mortar. I have a little handheld nylon brush to brush that area, but since I raised my FC a little it has stayed clear. I would raise your normal chlorine target by 1 or 2 ppm. Especially during the hot summer. Riding so close to the minimum could cause localized areas to drop below minimum especially on big swim days with lots of people swimming or long swim days.

    I have 70 CYA and I keep my FC at 7-8. And often 10ish when we plan to spend all weekend in the pool. Which is every weekend!
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  11. Back To Top    #11
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Location
    Tucson, AZ
    Posts
    11,604

    Re: Should I be worried about "slimy" gunite boulders?

    I have a rock waterfall and there's a small section of it with a stone ledge that is submerged, maybe ~1 sq ft of surface area. It is very easy for the small area to have stagnant water and the water volume in that area (maybe 1-1/2" deep) is so small that the FC could easily get used up with just an hour of hot sun. There is a grout line there that I have, on occasion, found green algae growth. My water otherwise is like yours, clear, no CCs and holds chlorine. So here's a few things I have done to mitigate the issue -

    1. Run the waterfall 3X per day for 30mins each time to ensure adequate water exchange in that area;

    2. CONSTANT VIGILANCE! (anyone get the literary reference?). I keep close watch of the suspect area to look for any signs of growth.

    3. Diluted bleach spray. I have one of those one gallon garden canister sprays (the kind you hand pump) and I fill it with a dilute mixture of 4 parts water and 1 part Clorox. I make sure to spray the entire waterline of the water feature to ensure that it sees bleach. I do this at the end of the day roughly 2-3 per week during the swim season.

    Anything you can do with a scrub brush will likely help. As a previous poster mentioned, submerged surfaces whether natural stone or formed from gunite, are beautiful but require additional care and attention....


    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

  12. Back To Top    #12


    TFP Guide

    cowboycasey's Avatar
    Join Date
    Jul 2013
    Location
    Fletcher, OK
    Posts
    3,346

    Re: Should I be worried about "slimy" gunite boulders?

    Quote Originally Posted by JayBauman View Post
    According to the table you reference, my FC range is adequate; I have SWG. Are you telling me that this table is not correct?
    I missed that, So sorry.. it is even in your sig
    Pool: Intex 16x32 15000 gal, 2 speed 340042, Pentair CC320 Filter, CircuPool SJ45 Salt System, Intermatic PE653RC; Hot Tub: 650 Gal SWG Megachlor
    links: pool school * Recommended-Levels * SLAM * CYA chart * Test kits * How To Post Pictures * Poolmath * OCLT ** Support your website if we helped you :) **

  13. Back To Top    #13
    JayBauman's Avatar
    Join Date
    Sep 2014
    Location
    Katy, TX
    Posts
    617

    Re: Should I be worried about "slimy" gunite boulders?

    Quote Originally Posted by JoyfulNoise View Post
    2. CONSTANT VIGILANCE! (anyone get the literary reference?).
    No, Mad Eye, I don't get the reference. Can you enlighten us?



    Quote Originally Posted by zea3 View Post
    JayBauman did you turn off the SWG for the OCLT? How far below the waterline does the slimy feel extend? Do you have a lot of sunscreen users in the pool?
    SWG was turned off for OCLT.
    Slimy feeling is limited to the gunite boulders, which extend from 3-6" into the water, in general. There is never any slimy feeling on my plaster, and brushing the plaster does not give any cloudy residual...this is limited to boulders only.
    We are a family of fair-skinned people. There's always some sunscreen getting applied (and presumably getting washed off), which is my 2nd-most favorite explanation for the slime.



    Quote Originally Posted by pooldv View Post
    Hi Jay,
    My bet is that it is algae getting a little start occasionally. I've had the slimy feel a few times. Probably due to slightly less circulation in the area. Brushing that area a couple of times a week will probably fix it. I have some rocks at the waterline and that is where my algae grows, in the mortar. I have a little handheld nylon brush to brush that area, but since I raised my FC a little it has stayed clear. I would raise your normal chlorine target by 1 or 2 ppm. Especially during the hot summer. Riding so close to the minimum could cause localized areas to drop below minimum especially on big swim days with lots of people swimming or long swim days.
    Brushing it is not a problem; that's what I'm doing now. I was just wondering if I somehow had missed something.

    I could imagine that low circulation in localized areas could allow algae to get a toe-hold. However, I also find slimy areas on my skimmer inlet areas, which should be the most circulated parts of my pool. The next-highest area is near my boulder waterfall, which gets run every day. I would not expect this area to be stagnant. The biggest problem is on the boulders on my sun shelf. This never feels slimy, but gives the most amount of cloudiness when I scrub it. You might argue that this is an area with low circulation, but my in-floor cleaning system keeps this area stirred up for multiple hours per day.



    Thanks, everyone, for chiming in (and please continue to add comments if you think of something else....). I don't see anything here that suggests I need to do something differently. I'll keep chlorinating and brushing to keep everything at bay. I wonder what happens when my water temperature drops back into the 70s. I didn't really have any observable slimy areas then.
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

  14. Back To Top    #14
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,966

    Re: Should I be worried about "slimy" gunite boulders?

    The only other thing I was thinking of earlier while reading all the replies was the material your PB used. By any chance have you considered contacting the builder to ask if there has been any history of that specific product used to fabricate the boulder molds of becoming slimy and not responding to standard chlorination or algae treatments? Just a thought.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  15. Back To Top    #15
    JayBauman's Avatar
    Join Date
    Sep 2014
    Location
    Katy, TX
    Posts
    617

    Re: Should I be worried about "slimy" gunite boulders?

    So I brought my pool up to SLAM levels and passed all 3 requirements on the first night. The only thing I've noticed is that the places where the "slimy feeling" accumulates is exactly where the pool rocks/water get the highest temperature. Between my waterfall, spill-over spa, and in-floor cleaning system, I have quite excellent circulation in the pool. Whatever is happening is quickly eliminated by brushing. I can live with that. My wife, on the other hand, would never let me forget it if the pool turned green!
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

  16. Back To Top    #16
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,711

    Re: Should I be worried about "slimy" gunite boulders?

    LOL Wife leave Jay alone! He is doing a great job so there! LOL

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  17. Back To Top    #17
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,998

    Re: Should I be worried about "slimy" gunite boulders?

    Well, you are a looong way from a green pool. A month ago I had algae in the light, the pool vac and a dozen or so spots around the pool. My CC was 0 and water was as crystal clear as it has ever been. Never even a hint of cloudiness.

    Maybe there is something about those rocks that attracts or holds the sunscreen. None of us ever use sunscreen so I don't really know how it acts.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  18. Back To Top    #18
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Location
    Tucson, AZ
    Posts
    11,604

    Re: Should I be worried about "slimy" gunite boulders?

    Unfortunately when you have irregular surfaces around your pool, water chemistry variations are always possible. Rock waterfalls (I have one) can be fun and beautiful, but they typically require extra care and maintenance to keep them clean. Stagnant water and damp porous surfaces are the enemy you typically have to fight against.


    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

  19. Back To Top    #19
    JayBauman's Avatar
    Join Date
    Sep 2014
    Location
    Katy, TX
    Posts
    617

    Re: Should I be worried about "slimy" gunite boulders?

    Update: My pool was "slimy" in the usual locations, even after the SLAM. After daily brushing for a few days afterwards, the slimy feeling went away and hasn't returned. We were using the pool less during these times, so maybe I'll chalk it up to sunscreen. Nothing about this situation is consistent with algae, so I'll assume that I was fighting the wrong problem. I did, however, get the opportunity to learn how to read the born-on dates on bleach jugs.
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

  20. Back To Top    #20
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Location
    Tucson, AZ
    Posts
    11,604

    Re: Should I be worried about "slimy" gunite boulders?

    Quote Originally Posted by JayBauman View Post
    Update: My pool was "slimy" in the usual locations, even after the SLAM. After daily brushing for a few days afterwards, the slimy feeling went away and hasn't returned. We were using the pool less during these times, so maybe I'll chalk it up to sunscreen. Nothing about this situation is consistent with algae, so I'll assume that I was fighting the wrong problem. I did, however, get the opportunity to learn how to read the born-on dates on bleach jugs.
    Funny story I've told before - I have a sister-in-law and brother that visit annually around April/May timeframe. They're east coast city-slicker DINKs (dual-income, no kids). My SIL loves the sunshine here in AZ and uses our pool as an excuse to work on her pre-summer tan for all her NYC fashionista colleagues. I swear the woman goes through two full bottles of tanning lotion (mostly oil with a tiny amount of SPF to it) during their stay. My pool water surface looks like the shores of Alaska after the Exxon-Valdez disaster. I bought a 500-ct box of PigMat Oil Absorbent polypropylene cloth that I float on the pool surface and stuff in the skimmer to soak up the hydrocarbons. The first year I did not do that and I had a thick scum-line all around the pool. I literally has to drop the waterline an inch or two and then scrub it off to get my clean tiles back. So yeah, suntan lotion can definitely cause you headaches.


    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •