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Thread: What to do with old chemicals?

  1. Back To Top    #1

    Join Date
    Jul 2010
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    What to do with old chemicals?

    I have inherited a cupboard full of chemicals from the previous people who ran the pool. Plus I have some 14% sodium hypochlorite left over from last year's attempt to winterize the pool.

    I know that sodium hypochlorite ages quickly. I was told it was good and fresh when I bought it, but that certainly won't be the case now. It's been stored in a shed, where it has been frozen over winter, and now is probably starting to get a little warm. Is it safe to use?

    In the cupboard I have three (!) bottles of winter algaecide, some chlorine reducer, and clarifier gel tabs, none of which I have ever used. I'll probably hang onto the chlorine reducer just in case, but I can't see me ever using the clarifier tabs, because it sounds like they make a gungy mess in the sand filter. Is there a safe way to get rid?

    Also, will the algaecide be any good by now? It's at least two years old.
    90k litres, outdoor in ground pool, concrete, painted (I hate paint)
    Sta-Rite 5P2R 1.5 Hp pump, undersized sand filter (needs upgrading).

  2. Back To Top    #2

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    Re: What to do with old chemicals?

    Most municipalities have information on what to do with chemicals that people want to discard for various reasons. Have you checked with your city or county to see what options that they might have?

    Although the sodium hypochlorite is old and probably not at its full 14% strength anymore, I would imagine that it is still ok to use in the pool. You just won't know the strength now like you did when it was fresh.

  3. Back To Top    #3
    Mod Squad Bama Rambler's Avatar
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    Re: What to do with old chemicals?

    The clarifier, I'd probably get rid of. The Algaecide depends on the ingredients. And I'd hang on to the chlorine and the Thiosulphate (CL reducer).

    Your local pool store might be a good resource for getting rid of the chems. If they don't take them they will probably know the proper procedure.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: What to do with old chemicals?

    Thanks bama and 257. I'll check the ingredients on the algaecide. It's definitely got copper in it though.
    90k litres, outdoor in ground pool, concrete, painted (I hate paint)
    Sta-Rite 5P2R 1.5 Hp pump, undersized sand filter (needs upgrading).

  5. Back To Top    #5

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    Re: What to do with old chemicals?

    Quote Originally Posted by loop_pea
    Thanks bama and 257. I'll check the ingredients on the algaecide. It's definitely got copper in it though.
    No problem. Yes, if the algaecide is copper based, I would get rid of it.

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