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Thread: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

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    Mike Hawk's Avatar
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    Question Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    -Edit: Update on post #13, it was my SWG circuit board. Easy fix though.

    New owner here. Pool details in sig. Glad there's a forum dedicated to the DIYer!!!

    Temps are ~50f give or take 10 lately. I've got my CYA, Borate, PH, and CH all in line according to the calculator. Salt is ~3500. SWG was at 36% output, now cranked up to 100% output. Pump runs 24/7 (I'll need to address that in another thread). But my FC is still 0, even after a night when I added 1 gal of 8.25% which according to the calc should have gotten my FC up to 3.

    Pool is 99% clear. There's just a few spots on the steps where the KK can't reach and I see some small dime sized bright green spots. I'm assuming the cold temps (and SWG) are the only thing keeping my algae from turning into the Green Monster of DOOM?

    I've got 6 gallons of 8.25% ready to go this weekend, but if it won't be worth my time or $, then I'll just deal with SLAM come Spring.

    What say you TFP?
    2007 Gunite 15k Pump: Whisperflo Motor: B2983 2spd 2.2/0.28 SFHP Sand Filter: TR100 SWG: Aqua Rite T15 Timer: PF1102T w/ redneck SPDT toggle switch Vacuum: Milliard 19" manual / PoolCleaner 2X auto

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    Patrick_B's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    If it were me, I'd not hesitate to clear it up ASAP. Others may say wait, but I see no good reason to let Algae live. I would brush and SLAM it until all traces were gone.

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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Welcome to TFP!!!

    Remember your SWG wont generate lower then 55 degrees. Might as well turn it off until water reaches and stays near that temp. I would make sure it passes OCLT before I would close it. If not, something could happen at the worst possible time. What you spend now, will be double if you leave it until spring. The mere fact that after dumping in chlorine and you are seeing no reading could be two things. One you have something in your pool that the chlorine is reacting to and killing or your CYA level is non existent and the sun is burning it off. Add the next bottle at night, check chlorine reading 20 minutes later, record that #, if the chlorine reading isn't the same come sun up, then you need to slam your pool.

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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    FC of zero in your climate this time of year just doesn't make sense based on your description of what you have added.

    How are you testing? Something isn't right.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad tim5055's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Quote Originally Posted by Mike Hawk View Post

    Pool is 99% clear. There's just a few spots on the steps where the KK can't reach and I see some small dime sized bright green
    The KK or your filter are never a solution to visible algae, chlorine is. I agree with others, address it now.

    Quote Originally Posted by duraleigh View Post

    How are you testing? Something isn't right.
    +1
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Mike Hawk's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    None other than the most glorious TFT-100 + Speedstir + K-1766 for salt + Lamotte Strips for Borate. I went all-in head-first!

    Pool only has house shade in the morning, otherwise it's a sun fest the rest of the time from mid morning to sun down. Didn't know SWG stops operating in cold. For now it'll do a count up from 0 to 17 on the diagnostics. Once it hits 17 the Power and Generate LEDs will light up green for a few seconds. The counter will then go to 0 and rinse and repeat. I'm assuming my SWG is working. The previous owner said the cell was recently checked and cleaned. I need to finish getting my learn on on my SWG, my KK (it's not kreepin lately, I think there's a leak in the tubing, it's 7 years old which is about the time they wear out from what I'm reading), and also there's a leak at my Whisper Flow. Eye eye eye!!! To. Many. Variables.

    I've taken a ton of pics in my escapades @ Home Depot, Sam's Club, and Wally World looking for the cheapest prices (I'm a Slickdealer of epic proportions ). So I'll post the pics up as well as my pool / setup once I get home tonight. And do a new set of TFT100 tests.

    2007 Gunite 15k Pump: Whisperflo Motor: B2983 2spd 2.2/0.28 SFHP Sand Filter: TR100 SWG: Aqua Rite T15 Timer: PF1102T w/ redneck SPDT toggle switch Vacuum: Milliard 19" manual / PoolCleaner 2X auto

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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    I see no pressing reason to rerun all the tests but it would be VERY helpful to run...

    pH
    TA
    FC
    CC
    CYA

    No need for CH, really.

    About an hour before you test, please add enough chlorine to get to 4 ppm or so using PoolMath for your calculation.

    Use the FAS-DPD chlorine test so we can tell accurately if you are consuming excess chlorine in the pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    You've said the temps are ~ 50 +- 10 that sounds like air temp to me. It's water temp that determines your swg running or not.If you don't already have one, you might consider investing a couple bucks in a cheap pool thermometer. Your swg owners manual should tell you the temp range for it to generate. The air temps here have already occasionally dropped to high 30 s , but my water temps are still ~60. I don't expect my swg to be generating too much longer.
    Pool size: 24000gal inground Vinyl-Taylor k-2006 and k-1766 test kits and-speed stir
    Intermatic P1353ME digital timer w/freeze sensor
    CircuPool Si-45 SWCG System
    Polaris 280 vacuum/Polaris PB4-60 boost pump
    Pentair IntelliFlo VS 3hp Pump--Pentair sand filter

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    Mike Hawk's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Hey guys, back again, sorry for thread abandonment. Life with 2 kiddos is crazy busy.

    Water temps with a thermo are ~58f

    Results Saturday afternoon:
    FC 0
    CC 0
    TC 0
    ph 7.8
    TA 100
    CH 250 (I added more to get it to 300)
    CYA 60 (I added more to get to 70)
    Salt 3200
    Borate 30 (I added more borax and acid to get it to 50)

    After my tests I added 5 gal of 8.25 to get FC to 28. A couple hours later my FC was down to 15.5 and my CC was 0.5. So I added more bleach to get her back to 28.

    I've tested today (Sunday) twice, once in the afternoon then again late evening, my FC was 28 CC 0.0, then 26.5 and 0.0. I'd say I'm done slamming? In the winter time with the SWG not generating, should I just not care about FC??? Why don't SWG generate in cold temps? Does algae grow in the cold?

    On to the pics!

    Removable fence put in by the PO. I think we'll eventually get some sort of wrought iron fence with some short shrubbery to block out the wind and views for when we go skinny dipping


    2-3 person seat on the deep end, better than nothing I guess. I have a friend who's seat goes the entire length, pretty convenient.


    Our 1 year old LOVES the sun bather


    Triton II Sand filter


    Aqua Rite SWG


    Whisperflow with what I guess is already an aftermarket motor. Notice the lovely leak I have?


    GRRRR!


    Sam's Club 121 oz 8.25% Bleach, actually more expensive than Wally World, surprised me!


    Wally World 121 oz 8.25%


    Home Depot 121 oz 8.25%


    Home Depot 4lbs CYA


    Wally World 9lbs Calcium Chloride. Check out gal gave me the stink eye and wanted to know if I knew something she didn't (about the weather). I started to explain pool chemistry and her eyes just glazed over


    Wally World K-1000 Basic test kit. Seems cheaper than online places I can find the K-1000!


    Pics I didn't take
    $3.97 76oz Wally World 20 Mule Team Borax
    $12.98 2x1 gallon cardboard packaged Home Depot Muriatic Acid 31.45%
    2007 Gunite 15k Pump: Whisperflo Motor: B2983 2spd 2.2/0.28 SFHP Sand Filter: TR100 SWG: Aqua Rite T15 Timer: PF1102T w/ redneck SPDT toggle switch Vacuum: Milliard 19" manual / PoolCleaner 2X auto

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    Mod Squad tim5055's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Quote Originally Posted by Mike Hawk View Post
    After my tests I added 5 gal of 8.25 to get FC to 28. A couple hours later my FC was down to 15.5 and my CC was 0.5. So I added more bleach to get her back to 28.

    I've tested today (Sunday) twice, once in the afternoon then again late evening, my FC was 28 CC 0.0, then 26.5 and 0.0. I'd say I'm done slamming? In the winter time with the SWG not generating, should I just not care about FC??? Why don't SWG generate in cold temps? Does algae grow in the cold?
    I'm having a hard time following your testing schedule, but are all three of these true?

    CC is 0.5 or lower;
    You pass an OCLT (ie overnight FC loss test shows a loss of 1.0 ppm or less);
    And the water is clear (if that is yesterdays photo of the pool I can see this one)

    For a true OCLT you test after the sun is off the pool in the evening and then again in the morning before the sun gets on the pool. This proves if something other than UV rays are consuming chlorine.

    Algae will grow in the cold, just slower. I keep my pool open year round (no swimming, it 60 right now) and I just keep the FC at my target. With the very low chlorine demand I have been diluting the solution in my injection tank to keep it from going too high. I am near the point that I will just let it run dry and add manually as need be.

    When you are reporting your results we only deal with FC & CC, so you can ignore calculating TC.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Mike Hawk's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Yeah, I'm fudging the testing on the OCLT. I passed the other two! (That counts for something right? Right? Yeah, I'm lazy sometimes) Having a head cold stinks!

    I'll test my FC this evening and then again tomorrow morning
    2007 Gunite 15k Pump: Whisperflo Motor: B2983 2spd 2.2/0.28 SFHP Sand Filter: TR100 SWG: Aqua Rite T15 Timer: PF1102T w/ redneck SPDT toggle switch Vacuum: Milliard 19" manual / PoolCleaner 2X auto

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    Mike Hawk's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Passed the "Occult" as I call it with flying colors. Also stocked up on Acid, Borax, and Safe-T-Power so I'm good to go for the spring hopefully :crossesfingers:

    Now to work on that blasted KK that isn't sucking and the pump that's leaking Oh and to figure out where to order a new cover. PO had a professional one put in (with the bolts that screw into the ground when not in use). He took the cover with him cause there was no way I was gonna pay $2k for a 7 year old used one.
    2007 Gunite 15k Pump: Whisperflo Motor: B2983 2spd 2.2/0.28 SFHP Sand Filter: TR100 SWG: Aqua Rite T15 Timer: PF1102T w/ redneck SPDT toggle switch Vacuum: Milliard 19" manual / PoolCleaner 2X auto

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    Mike Hawk's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Just to add closure to this. My SWG board had a blown capacitor on it, a known issue. Replaced it and I was back in business.

    Also replaced my KK with a PoolCleaner 2x and no more issues.

    Now I have cracks in my pool that I'm getting a quote on today to get fixed. And my anti-freeze auto pool pump timer will click on but the pump won't run. Need to look into the pros/cons of rebuilding my current pump vs getting a variable speed higher hp one.

    Good times.
    2007 Gunite 15k Pump: Whisperflo Motor: B2983 2spd 2.2/0.28 SFHP Sand Filter: TR100 SWG: Aqua Rite T15 Timer: PF1102T w/ redneck SPDT toggle switch Vacuum: Milliard 19" manual / PoolCleaner 2X auto

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    Mod Squad pooldv's Avatar
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    Re: Should I SLAM even though it's Fall and I'm not using the pool? FC @ 0

    Welcome back!

    I am a big fan of my VS pump. I run it at 1100 rpm for making chlorine, skimming and filtering. It uses 150 watts at 1100 rpm. At 10.25c/kWh I can run my pump 8 hours a day for about 4 bucks a month. How is that for a pro?

    This is probably a good VS pump for you, Pentair SuperFlo VS Pump 342001 | Pentair 342001
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    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

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