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Thread: Can you over-Algecide a pool?

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    DonW's Avatar
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    Jun 2008
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    Central IL.
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    Can you over-Algecide a pool?

    We have a new pool that I finally got finished and got the pump running & circulating this past Monday. While I'm waiting for the water to clear up (well water, went from brown to kind of a clear green) and come into its own, I've noticed that 2 or 3 kinds of water bugs have now found a new home. My wife refuses to go into the pool until ALL the bugs are gone. I've read from "another forum" that Back-Up algecide will eliminate our water bug problem.
    Monday morning I added the stabilizer and that night hit it with 3 lbs. of shock. The next day I added 19 oz. of algecide & 38 oz. of stainguard. Wednesday I vaccumed and backwashed, (might have backwashed too soon).
    So, can I muck up the levels of the pool by adding another bottle of Back-Up?
    Pool is a Tahitian 18 x 33, 16,715 gal. w/sand filter & 1.5 pump.
    This is our second pool, but with the first one we only had it for 2 years. Actually 1 month the first year and then one whole summer. That was three years ago. So in essence, I'm back on a learning curve and don't know or can't remember squat.
    18' x 33' AGP
    16,715 gal.
    200 lb. Sand Filter w/Hayward PowerFlo MATRIX 1.5 H.P. 2 Spd. pump
    Stenner Injection Pump System

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    Join Date
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    Flower Mound, TX
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    Re: Can you over-Algecide a pool?

    One of the gurus will be along shortly to add their opinion but if I were to hazard a guess, I would say that it is definitely possible to cause problems with overuse of algaecide. Many, if not all algaecide products contain metals and metals in high concentrations, although toxic to algae, will also cause severe stains in your pool. Copper is one metal commonly found in algae products and is particularly bad about staining and causing hair to turn green.

    The best algae preventative is properly sanitized pool water with an approved sanitizer.
    10K gallon IG gunite with waterfall; Pentair CC320P filter; WhisperFlo 2 HP pump
    TF Test Kits - Pool Math - Pool School
    "It depends."- JohnT

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    Re: Can you over-Algecide a pool?

    Yes, especially algaecides that contain copper. It can lead to high levels that cause staining AND green hair.

    Since you are a relative noob with pool chemistry, I'd recommend some reading in Pool School....let us know if you have any questions at all.

    Welcome!
    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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    Guest

    Re: Can you over-Algecide a pool?

    Welcome! I'm fairly new here too. When I bought my pool (with house) this year, it was a green swamp. It had not been used in 2 years. Prior to that, the owner had used baquacil.

    Anyhow, all I've used is bleach starting in June 2008. Clorox. It's gorgeous and clean now. Bleach kills algae. I followed the steps here, taking the chlorine level up to 15 ppm for a few days until it cleared. Now I just add 1/3 bottle per day (and test daily -- got a good test kit). I do have to brush the side walls every other day or so, and vacuum it weekly. I don't really want to swim in a bunch of chemicals, so the BBB (bleach, borax and baking soda) method really attracted me. My neighbors tell me that the pool is much clearer / cleaner looking than before. Also, the former owner drained a lot of water constantly. I don't.

    My point is that you probably don't need to be adding all those chemicals. Others with more experience can tell help you more. Good luck.

    Sue

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    DonW's Avatar
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    Central IL.
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    Re: Can you over-Algecide a pool?

    Thank you for the information.
    What can I do about the waterbug issue?
    18' x 33' AGP
    16,715 gal.
    200 lb. Sand Filter w/Hayward PowerFlo MATRIX 1.5 H.P. 2 Spd. pump
    Stenner Injection Pump System

  6. Back To Top    #6
    Guest

    Re: Can you over-Algecide a pool?

    Type of bugs probably depends on where you live. I live next to a wooded park with a river and pond, plus I own a small pond that's 15' from my pool. I don't have any bugs in my pool (other than dead June bugs and bees). I did see 2 bugs after I first got the pool cleared that looked like they were swimming. I just scooped them out with a leaf rake (net) and nothing since. If you do a search on this site, you will find some posts about bugs. Here's a thread:

    backswimmers-help-t7643.html?hilit=%20water%20bug

    Sue

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