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  1. #1
    heymom1 is offline ** No working email address ** heymom1 0
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    Default Re: Black Algae and Silver

    You should get the ph lower before you shock, that I do know. As for a saltwater pool, I'm not sure how that affects the cl level itself, but you need to find out your CYA (cyanuric acid) level because you might need way more cl than just 5 or 6. You can take the cl level up to 20 and beyond (depending on your CYA level), and that is what kills the algae. I can't imagine silver in any form doing this.

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    waterbear is offline Lifetime Member Sniggle Mechanic waterbear 4 stars waterbear 4 stars waterbear 4 stars waterbear 4 stars
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    Default Re: Black Algae and Silver

    The only silver based agaecide I know of is Silver Algaedyn by D.F.Goldsmith. It is a very effective algaecide 'of last resort', IMHO. It is expensive and silver can stain but it does work. I am not sure if it is compatible with SWGs however.
    Retired pool store and commercial pool maintenance guy.

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