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Thread: Re: Did I add to much stabilizer to my pool ?!?

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    Join Date
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    Exclamation Re: Did I add to much stabilizer to my pool ?!?

    My local pool store tells me it's impossible to have too much stabilizer. Mine's currently above 150ppm, and I'd like to bring it down to the level that seems to be "normal", from what I've read on this site. Aren't stabilizer and CYA the same thing? Am I on the right track, or am I all wet, so to speak? What about my pool store's comment?

    Edit: currently using marginally effective test strips…yes, a TF-100 test kit is on it's way!
    ----------------------------------------
    10,000 gallon / fiberglass / IG pool
    Pentair Nautilus FNS24 D.E. Filter
    Hayward 3/4HP pump
    Build/Install date: June 2003
    Polaris 360
    Last edited by Herkdriver; 08-24-2014 at 07:24 AM. Reason: added pool specs…and test kit info

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    bridgman's Avatar
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    Re: Did I add to much stabilizer to my pool ?!?

    Having too much stabilizer is definitely possible -- although strictly speaking it's not "too much", just "so much that managing your pool reliably becomes a huge pain in the ***"

    Yes, stabilizer = CYA and managing CYA levels seems to be one of the "magic tricks" which make it easier to maintain your pool over the long term. So yes, draining/refilling to bring CYA levels down would be a good thing. You can manage the pool at higher levels but if you ever let the chlorine levels dip too low for the CYA level (higher CYA levels need higher FC levels for the same sanitizing effect) and have to fight an algae bloom the high CYA levels will make that very difficult.
    Cedar hot tub, 680 US gallons - Snorkel wood-burning heater, canoe paddle, "offline" Intex 1000 GPH pump/filter with skimmer

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    Re: Did I add to much stabilizer to my pool ?!?

    Two things -

    1. Stop listening to anything the pool store "experts" tell you to do. They have already showed their ignorance by telling you what they did about CYA.

    2. You need to drain off about half your pool water and refill or else you will not be able to reliably control your pool. I had 150ppm of CYA back in late May and I almost had a massive algae outbreak had I not come to this site and caught it in time.

    Yes, it stinks to have to drain that much water. But at 150ppm CYA, you'll have to keep your FC levels so high that it will be impractical.



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    Re: Did I add to much stabilizer to my pool ?!?

    Thank you for the comments! After reading a number of posts and educating myself through the Pool School, I realize the "experts" are far from it. I was having a hard time keeping the pool clear, now it all makes sense. So, the next question…how do I drain that much water without risking floating (it's a fiberglass pool), cracking, or other issues?
    10,000 gallon / fiberglass / IG pool
    Pentair Nautilus FNS24 D.E. Filter
    Hayward 3/4HP pump
    Build/Install date: June 2003
    Polaris 360

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    Re: Did I add to much stabilizer to my pool ?!?

    Isn't that the setup for an old joke?...



    Jokes aside, several small drain and refill sessions. It'll use a bit more water in the end, but it's pretty much your only choice.

    -Denny
    IG gunite 20k Gal (estimate), Nautilus NS-60 filter (D.E.), Single speed pump (unreadable nameplate - assume 1HP) on a crappy mechanical timer.
    And a worn-out Kreepy Kraully. TF-100.

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    Mod Squad tim5055's Avatar
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    Re: Did I add to much stabilizer to my pool ?!?

    Quote Originally Posted by Herkdriver View Post
    Thank you for the comments! After reading a number of posts and educating myself through the Pool School, I realize the "experts" are far from it. I was having a hard time keeping the pool clear, now it all makes sense. So, the next question…how do I drain that much water without risking floating (it's a fiberglass pool), cracking, or other issues?
    You can always do it in stages like I did. Aggressive backwashing and drain a foot or so anytime I got the urge. So far I have taken mine down from 200+ to 70.

    Another option is on a very hot day make sure your pump is not running and mixing the water. You will end up with warm water near the surface and cooler water at the bottom. Drain from the top and add water at the bottom (should be colder coming out of the hose). Slow and steady and you can drain a lot without dropping the water level at all.

    - - - Updated - - -

    Oh, I forgot to say - ignore the folks at the pool store. They have already shown your their (lack) depth of knowledge.
    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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    Re: Did I add to much stabilizer to my pool ?!?

    Got it! I just read a few more posts and I think I can make it work. In the meantime, I've been adding lots of liquid chlorine (bleach) and things are looking really good. Many thanks!

    Edit: I have to add, for those newbies like me…after spending some quality time in the Pool School and reading various posts, this is a lot less daunting than it was a few days ago. As many have said, mastery of the chemicals is becoming second nature.
    10,000 gallon / fiberglass / IG pool
    Pentair Nautilus FNS24 D.E. Filter
    Hayward 3/4HP pump
    Build/Install date: June 2003
    Polaris 360

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    Re: Did I add to much stabilizer to my pool ?!?

    Quote Originally Posted by Herkdriver View Post
    Got it! I just read a few more posts and I think I can make it work. In the meantime, I've been adding lots of liquid chlorine (bleach) and things are looking really good. Many thanks!

    Edit: I have to add, for those newbies like me…after spending some quality time in the Pool School and reading various posts, this is a lot less daunting than it was a few days ago. As many have said, mastery of the chemicals is becoming second nature.
    Just for inspiration, my CYA was at 150ppm in late May after using pucks all winter long. Then I found TFP and got schooled at PoolSchool. I used a combination of aggressive backwashing (during the days I had off) and slow drains every night (about 3" per evening). In two weeks time, I reduced my CYA by almost 60%.

    My pool has been sparkling beautiful all summer long without any issues whatsoever.

    You can do it!!!

    Slow and steady wins the race....



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