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Thread: Pool drain and refill questions

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    Join Date
    Apr 2007
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    Pool drain and refill questions

    I just drained all but about 3 or 4 feet of the deep end to polish the horrible stonescapes finish we had put on (bad application, not product) and have a few water questions. I've never drained and started with new water before and am wondering if theres a way to guess at the stabilizer I'll need. I'm guessing I'll be adding about 25000G of new water which will be at zero. I've found a few calculators, but I'm not sure I"m using them right. Also, is liquid stabilizer worth the extra cost for this scenario if I want to get the water set up quickly?
    When our pool was remodeled, they came and dumped in the quart-sized bottles of Jack's Blue Stuff and they said they swear by it for a startup. I wasn't paying for it seperately, so there was no incentive to sell me on it. Anybody have good/bad experience with that stuff?
    I know I need to post test results, which I'll do, but I'm out of everything but pH and chlorine tests. I'll get those and try to get some numbers.
    28K IG, stonescapes pebble, raised spa, hayward heater, Pentair Intelliflo, Pentair 60ft DE filter, built around 1980, remodeled 2007.

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    Re: Pool drain and refill questions

    Quote Originally Posted by laff66
    I've never drained and started with new water before and am wondering if theres a way to guess at the stabilizer I'll need. I'm guessing I'll be adding about 25000G of new water which will be at zero. I've found a few calculators, but I'm not sure I"m using them right.
    The Pool Calculator says for 25K to go from CYA 0 to 30, you need 6+ pounds. I'm guessing what's left in the pool has some CYA in it so really you only need to figure it on what you'll be refilling.
    Quote Originally Posted by laff66
    Also, is liquid stabilizer worth the extra cost for this scenario if I want to get the water set up quickly?
    No, the granules typically are gone in a day or two. Good enough.

    I have no experience with Jack's Stuff, but somebody else will.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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    frustratedpoolmom's Avatar
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    Re: Pool drain and refill questions

    Jack's is good stuff. Do you have a reason to suspect metals are present in your water?

    You can have your tap water tested for metals before you refill. Confirm before you spend the money.

    I second the vote for not needing liquid stabilizer. Granular is good enough.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: Pool drain and refill questions

    Okay, thanks for the QUICK replies. I have no idea about metals, in fact I didn't even know thats what that stuff was for - maybe I should have done a little reading. I filled the spa this evening, and more of the deep end, thinking new tap water would look great, but ewww.. It looks kind of yellowish??? I'll be treating with some bleach until I can get some cracks dealt with prior to refilling all the way.
    28K IG, stonescapes pebble, raised spa, hayward heater, Pentair Intelliflo, Pentair 60ft DE filter, built around 1980, remodeled 2007.

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    JasonLion's Avatar
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    Re: Pool drain and refill questions

    Do you have well water or are you on municipal water?
    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

  6. Back To Top    #6

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    Re: Pool drain and refill questions

    municipal.
    28K IG, stonescapes pebble, raised spa, hayward heater, Pentair Intelliflo, Pentair 60ft DE filter, built around 1980, remodeled 2007.

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    frustratedpoolmom's Avatar
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    Re: Pool drain and refill questions

    The yellow could be iron. Get the water tested first, the combination of chlorine and iron could produce some unwanted results - which you can prevent with the Jacks'.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  8. Back To Top    #8

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    Re: Pool drain and refill questions

    In some cases the iron will filter out, there was somebody not long ago who had that happen but as I recall it took the better part of a week. If the spa filter is getting gunked up with yellow/brown then some or all of the color will eventually clear; just keep cleaning the filter, multiple times a day if you have to.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

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