Become a TFP Supporter Pool Math Forum Rules Pool School
Page 1 of 3 123 LastLast
Results 1 to 20 of 44

Thread: New pool owner, pool is sucking down chlorine and money!

  1. Back To Top    #1

    New pool owner, pool is sucking down chlorine and money!

    I bought a house with a pool this winter so I'm a rookie to say the least. I have read up on here and feel that I have a basic understanding of how each of the chemicals are contributing to the health of my pool. I've been having issues the last three weeks keeping chlorine in the pool. For instance I'll dump three gallons of 10% liquid chlorine in around 9pm which will bump me up from 0ppm to 11ish ppm. By the morning I will be at 2-3 ppm and by the next evening I will be back close to zero. All this trouble and reading on this forum convinced me to by the TF100 test kit and I just took my first readings tonight. FYI...I just got back from a four day vacation today so the water is cloudy and I was expecting no chlorine which is what I got. It also rained a lot this weekend. The water may be a little green but mostly just cloudy.

    Here are the results of my testing:
    FC, CC, TC =0
    PH =7.1
    TA =180
    CH = 180
    CYA = 80-100

    Planning to have a pool party on Friday so need some assistance! This test result matched my test strips pretty well and I had been thinking that I should drain to lower CYA, but shouldn't the chlorine be much more stable than my pool is acting with high CYA? I'm loosing 100% FC in less than 24 hours! Also, before vacation I had gotten my PH closer to 7.5, but with the solar cover on and a bunch of trichlor pucks in the pool it come back down.

    Thanks for any help,
    Jeff
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  2. Back To Top    #2

    Re: New pool owner, pool is sucking down chlorine and money!

    I know that you will get better advice from others than I can give as I am still learning as well. However you are going to have to start the shock process which is going to require a lot more chlorine or bleach than you have used. With your CYA that high it will take a lot.
    27k gal, vinyl, Pentair SD-80 sand filter, Pentair 1.5 hp pump, intellichlor ic40 SWG

  3. Back To Top    #3
    Charlie_R's Avatar
    Join Date
    May 2013
    Location
    Mexico, MO
    Posts
    2,156

    Re: New pool owner, pool is sucking down chlorine and money!

    Do a 1/3 drain and refill, check your CYA after. If it is at a more reasonable level, (50-60) then start the shock process.

    You probably already know to stop using the trichlor, as it contributes to the CYA problem. Bleach only from here on.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  4. Back To Top    #4

    Re: New pool owner, pool is sucking down chlorine and money!

    Hi Charlie, thanks for the help. I'm basically waiting for someone to confirm I need to drain, which you did, so I'll start that tomorrow. I'm still a little confused though as to why my high CYA levels would contribute to my rapid chlorine loss. Everything I read leads me to believe that the CYA should slow down the loss of chlorine not speed it up. I do understand that the FC must be higher to effectively clean when CYA is high but seems like FC would be more stable once those high FC levels are reached.

    Can you help me out with this question?
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  5. Back To Top    #5
    Charlie_R's Avatar
    Join Date
    May 2013
    Location
    Mexico, MO
    Posts
    2,156

    Re: New pool owner, pool is sucking down chlorine and money!

    My limited experience has shown -- at least on my own pool -- that high CYA + something growing in the pool can still give high FC losses.

    CYA in your pool only helps prevent losses to sunlight.

    Have you been reading in Pool School?

    Here's a page from there on the CYA/FC relationship: http://www.troublefreepool.com/pool-...ya_chart_shock

    If you don't have one, it is strongly suggested that you purchase a good test kit. You are going to need it to properly follow the shock process you are about to start.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  6. Back To Top    #6

    Join Date
    Feb 2012
    Location
    Cypress, TX
    Posts
    130

    Re: New pool owner, pool is sucking down chlorine and money!

    Like Charlie sad above- CYA only protects the chlorine from sunlight, not organics. If you are losing that much overnight then something is growing in your pool. Drain to get to proper CYA levels and then follow the shock process and stay on top of it. Friday may be a little optimistic. Without a good test kit (FAS-DPD), your chances will be nil. You have to keep it at shock level an test frequently to see if it has dropped below shock level and then redose back to shock level. It sounds like you will be dosing hourly at the rate your FC is dropping.
    23x40 freeform w/spa, 28,000 gal. PCC-2000 in-floor cleaning. Pebble Sheen w/flagstone coping. 14' weeping wall, (2) 18" sheer descents. Sta Rite- cart 400 sqft. filter, Intellipro VS pump, 1hp (cleaning)2hp (water feature)Max E Pro's. Easy Touch 8 function w/IPod. Rainbow chlorinator, Paramount Clear O3 (I know, I know), Max-E-Therm 400K heater.

  7. Back To Top    #7
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: New pool owner, pool is sucking down chlorine and money!

    I'll just join the pile-on here.

    Let's say you dump chlorine in a freshly filled pool. It's active - all of it. 100% fighting algae. But the sun breaks it down with UV light. So...you put in some stabilizer. It's like umbrellas shading the chlorine molecules. The ones holding the umbrellas have their hands full. The others can fight algae. If you keep adding CYA, eventually all the chlorine molecules have their hands full holding umbrellas, so the algae has no resistance. The only way to get some fighting chlorine in there is to add a lot more chlorine, more than you need to hold up all the umbrellas. The problem is, with the CYA levels you have, that's a HUGE number, way higher than the level you've been maintaining. That's why your pool keeps clouding up.

    To beat the algae, you need an overwhelming force of fighters. Which is shock level. And the more stabilizer in the water, the more chlorine you need to hold up all those umbrellas and have numerical superiority to the algae. When you start getting above 50 CYA, the shock level starts getting ridiculously high.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  8. Back To Top    #8

    Re: New pool owner, pool is sucking down chlorine and money!

    Thanks for all the help. I drained the pool about half way and I'm refilling now. I'm still hoping to have a clean pool by Friday! I'm done draining. Should I shock the pool as I refill?
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  9. Back To Top    #9
    Charlie_R's Avatar
    Join Date
    May 2013
    Location
    Mexico, MO
    Posts
    2,156

    Re: New pool owner, pool is sucking down chlorine and money!

    You do understand that shock is a process, not a one time application of a product, right?

    Will you be able to test chlorine levels as high as 25ppm? I ask because your signature line doesn't list a test kit.

    That is with guestimating your new CYA level being somewhere close to 60 ppm. You will need to maintain that level until the pool is clear, loses no more than than 1 ppm FC overnight, and has less than .5 ppm CC.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  10. Back To Top    #10

    Re: New pool owner, pool is sucking down chlorine and money!

    I'm realizing now that shock is a process, but no I did not understand this before all of my problems. Thanks for the heads up on the test kit. I forgot to add that in my signature. In the original post I did point out that I just got a TF100, so yes I can test up to 25 ppm.

    How long should I need to keep the pool at a "shock" level of chlorine?

    Thanks for the help
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  11. Back To Top    #11
    Charlie_R's Avatar
    Join Date
    May 2013
    Location
    Mexico, MO
    Posts
    2,156

    Re: New pool owner, pool is sucking down chlorine and money!

    If you are able to be vigilant and test/dose at least every couple of hours, it should go fairly quickly. Do expect a few days, though.

    With an expected CYA of 50-60, if the pool is at least mostly clear, your guests may be able to enjoy the pool even at shock levels. Do warn them to wear old suits, however. If I am incorrect, I would expect an expert here to make that correction.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

  12. Back To Top    #12
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: New pool owner, pool is sucking down chlorine and money!

    How long should I need to keep the pool at a "shock" level of chlorine?
    ......until you are done with the shock process. See red lines in my sig:
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  13. Back To Top    #13

    Re: New pool owner, pool is sucking down chlorine and money!

    Thanks for all the help. The pool is looking much better. Maybe the slightest bit of cloudiness at this point. A couple of questions.

    I just measured FC=11, CC=1.0, TA=160, CH=150, PH=7.5, CYA=50-60

    This after 1/2 drain and refill and about 2 straight days of holding the pool at shock levels (although not checking every couple of hours so brought to shock levels then dropped and brought back up a couple times a day). At this point I'm loosing about 45-50% of my FC in 24 hours and my CC is 1 ppm. I've brought the pool back up to 14.5 from 11 (shock level is 16-18). I'm hoping to use the pool weather permitting tomorrow around 3pm and I want the FC levels to drop to a high normal level so this is the reason that I did not bring the pool all the way back up to 18.

    Is this a big mistake?

    Also I did see the post about it being ok to let people swim when the pool is at shock levels but to wear old trunks. My wife's reaction to this was "No way it can be safe to swim if it is going to fad swim suits! I'm not putting my baby in there". Any good advice to ease her concerns, or should we be concerned.

    Love this forum! Thank you so much for all the great advice!
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  14. Back To Top    #14

    Re: New pool owner, pool is sucking down chlorine and money!

    Update.

    Last night when I added a gallon on liquid chlorine 10% in intending to go from 11 ppm to 14.5, I tested an hour later around 10pm and got 18 ppm!

    This morning at 8:40 I tested and got 11.5 ppm FC and 1 CC.

    That test last night seems to have jumped as if I have a pool half the size, but either way my overnight FC drop is still a lot higher than 1 ppm. Does this mean there is still some algae hiding somewhere?
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  15. Back To Top    #15
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: New pool owner, pool is sucking down chlorine and money!

    Quote Originally Posted by Jcgage0
    Update.

    Last night when I added a gallon on liquid chlorine 10% in intending to go from 11 ppm to 14.5, I tested an hour later around 10pm and got 18 ppm!

    This morning at 8:40 I tested and got 11.5 ppm FC and 1 CC.

    That test last night seems to have jumped as if I have a pool half the size, but either way my overnight FC drop is still a lot higher than 1 ppm. Does this mean there is still some algae hiding somewhere?
    Yes, there is still something in the pool eating chlorine. Have you checked in all the hiding places like light niches, ladders, nooks & crannies and brushing everything?

    I'm guessing the FC jump was just a testing error.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  16. Back To Top    #16
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: New pool owner, pool is sucking down chlorine and money!

    btw, based on your CYA of 50 - 60, I suggest you raise the shock level to 20.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  17. Back To Top    #17

    Re: New pool owner, pool is sucking down chlorine and money!

    Thanks for all the help everyone! I was able to use the pool on Friday and ended up letting the DC drop to high normal levels for swimming even though I new that there was still something eating my chlorine. Yesterday I cleaned out the pool thoroughly (brushed, removed and cleaned out light housing, removed and cleaned latter, scrubbed nooks and craneys around steps, scrubbed skimmer and returns). I then brought the pool back to shock levels. Still had a high overnight drop in FC of 6.5 ppm then from 20 to 13.5. I realized today I didn't backwash after stealing up all that dirt/Algiers cleaning yesterday so I have vaccines to waste and backwashed today.

    One more thing I'm wondering about. Should I take the floor drain cover off and clean in around the drain?
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

  18. Back To Top    #18

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: New pool owner, pool is sucking down chlorine and money!

    after stealing up all that dirt/Algiers cleaning yesterday so I have vaccines to waste
    You'd better check in on Siri, I think she's been in the vodka again today.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  19. Back To Top    #19
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: New pool owner, pool is sucking down chlorine and money!

    Quote Originally Posted by duraleigh
    after stealing up all that dirt/Algiers cleaning yesterday so I have vaccines to waste
    You'd better check in on Siri, I think she's been in the vodka again today.

    And maybe out in the sun too long with no umbrella.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  20. Back To Top    #20

    Re: New pool owner, pool is sucking down chlorine and money!

    Wow! Yeah Apple autocorrect and being in a little too big of a hurry got me there. That is a special sentence right there!
    Cincinnati OH, 20K Vinyl IG rect. 16x36, Hayward Super II pump with Hayward 60 GPM sand filter, Hayward H150 heater, space age blue solar cover, one skimmer and one deep end drain, two returns, makeshift fountain on one return for aeration. TF100 test kit.

Page 1 of 3 123 LastLast

Posting Permissions

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