Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 14 of 14

Thread: Suggestions to get the pool to normal levels

  1. Back To Top    #1

    Join Date
    Feb 2015
    Location
    Santa Clara,CA
    Posts
    43

    Suggestions to get the pool to normal levels

    My TF-100 kit arrived yesterday and I did the following tests (except the Chlorine detailed test) and here are the results.

    CYA - Above 100
    CH - 750
    PH - 7.8
    Total Alkaline - 160ppm
    Chlorine reading - 5 on the scale

    It looks like the only way to get the pool to normal state is to drain water and add back water (should have gotten rid of the pool guy much earlier).

    Is there any suggestion on how to go about this. I have a plaster pool with about 30000 gallons of water (other details in my signature).

    How much water should I drain?
    Should I do it in phases by draining water every weekend or in one go ?
    If I do it one go, how much time will the whole process take to drain and refill ?

    Any other suggestions ?

    Thanks a bunch,
    -Prasad
    30,000 gal,20'x40' IG (3-8.5 with diving board) ,Plaster,Pentair S8D110, Type of filer - DE,TF-100 test kit
    Poolsafe Automatic pool cover

  2. Back To Top    #2
    Casey's Avatar
    Join Date
    Apr 2007
    Location
    SW PA
    Posts
    10,157

    Re: Suggestions to get the pool to normal levels

    You do not want to drain the pool all the way, especially if you have a high water table. You can drain 1/3 of the pool and refill, circulate water for 1/2 to 1 hour and retest CYA. Continue the process until your CYA is within range.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Suggestions to get the pool to normal levels

    The amount of time it takes depends on just how high your CYA level actually is. Draining and replacing a third of the water often takes most of a day. You may need to do that several times, depending on just how high CYA actually is.

    You can get a very rough approximation of the actual CYA level by doing the CYA test again with dilution: mix equal parts of pool water and tap water together, do the CYA test with that, and multiply the result by two. That won't be very precise, but it will tell you if CYA is closer to 100 or closer to 200+.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,654

    Re: Suggestions to get the pool to normal levels

    You are on the right track.

    Just listen to what Jason and Casey said and you will get your pool balanced.

    Great job on getting the good test kit. Your pool will look SO much better AND be cheaper to maintain once you get it balanced.

    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

  5. Back To Top    #5

    Join Date
    Feb 2015
    Location
    Santa Clara,CA
    Posts
    43

    Re: Suggestions to get the pool to normal levels

    Thanks a bunch all.I redid the test and looks like it's closer to 200. Is there any other way apart from draining water. The water looks clear and pool looks nice.

    When we moved in 5 months back, we just hired the guy who was maintaining this before. The precious owners never used the pool but from the looks of it the water has always been clear and nice.

    Just wondering if drain,fill repeat is the only solution. Trying to keep my water bill under check.

    Thanks again.

  6. Back To Top    #6
    pwrstrk's Avatar
    Join Date
    Aug 2012
    Location
    Elverson Pa.
    Posts
    4,758

    Re: Suggestions to get the pool to normal levels

    Partial drains and refills are the most economic way of lowering your CYA level.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  7. Back To Top    #7
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,654

    Re: Suggestions to get the pool to normal levels

    Some areas offer a Reverse Osmosis (RO) BUT it is VERY expensive.

    Even in areas with high water prices it has shown to be cheaper to drain and refill.

    It needs to be done. Try to get it done before the water starts heating up. When it gets above 60 degrees is when algae can start growing dune to the chlorine not being high enough for the level of CYA in your pool

    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

  8. Back To Top    #8

    Join Date
    Feb 2015
    Location
    Santa Clara,CA
    Posts
    43

    Re: Suggestions to get the pool to normal levels

    Ok. I will start this process soon. Another question. Can the pool water be used for plants and trees. I am guessing the answer is 'no' due to Chlorine and other chemicals, but wanted to confirm.

  9. Back To Top    #9
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Suggestions to get the pool to normal levels

    Quote Originally Posted by prasadkm0204 View Post
    Ok. I will start this process soon. Another question. Can the pool water be used for plants and trees. I am guessing the answer is 'no' due to Chlorine and other chemicals, but wanted to confirm.
    I use pool water on the lawn with no problem. I don't think I'd want to use it on the vegetable garden, though. CYA supposedly breaks down into ammonia, which is actually a high-nitrogen fertilizer. The Chlorine will break down in a hurry in the sunlight, since it's going to be extremely shallow. The Calcium is already in the water coming out the hose, just not so concentrated. pH and alkalinity are probably better than what comes out the hose. The only fear is high salt. But if the pool doesn't have a SWG, it probably isn't high enough to kill things.
    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!

  10. Back To Top    #10
    Mod Squad kimkats's Avatar
    Join Date
    Jul 2012
    Location
    Tallahassee, FL
    Posts
    26,654

    Re: Suggestions to get the pool to normal levels

    I run mine out to the grass and trees and have not had any problems. The grass there looks the same as the area on the other side of the house that does not get pool water. Just saying..........................

    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

  11. Back To Top    #11
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: Suggestions to get the pool to normal levels

    Quote Originally Posted by prasadkm0204 View Post
    Ok. I will start this process soon. Another question. Can the pool water be used for plants and trees. I am guessing the answer is 'no' due to Chlorine and other chemicals, but wanted to confirm.
    The only exception might be giving water to very salt sensitive plants from a SWG pool. Here, the plants would have to be quite sensitive to salt. You won't have problems even with SLAM levels of FC.
    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

  12. Back To Top    #12

    Join Date
    Feb 2015
    Location
    Santa Clara,CA
    Posts
    43

    Re: Suggestions to get the pool to normal levels

    Related question. How do I go about draining the pool. I tried using the pool cover pump(not recommended by the pool cover company though) and it took forever to drain.

    I read threads about using backwash and the pool pump but I don't understand it completely. Is there a simpler option of renting a submersible pump anywhere ? How much does it cost.

  13. Back To Top    #13
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Suggestions to get the pool to normal levels

    I rented a submersible from Home Depot. Did the half day rental, but picked it up late afternoon and did not have to return it until the next morning. I want to say it was less than $50. Or you could buy a smaller cheap one from Harbor Freight.

    Please add your pool details to your signature and as described HERE as it will help us help you in the future.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  14. Back To Top    #14

    Join Date
    Feb 2015
    Location
    Santa Clara,CA
    Posts
    43

    Re: Suggestions to get the pool to normal levels

    Thanks Jason. My signature is 'on' but looks like it doesn't show up when I update a thread with a phone (instead of desktop).
    I'll check out at home depot today.

    -Prasad
    30,000 gal,20'x40' IG (3-8.5 with diving board) ,Plaster,Pentair S8D110, Type of filer - DE,TF-100 test kit
    Poolsafe Automatic pool cover

Posting Permissions

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