Parts that are now bluegreen, as evidence of dying, should breakup and sink either from wave action or a rain shower. If you would spray it with a garden hose it will likely break up and sink. Wave action from a jet ski should break it up and it would sink. The other thing that would breakup and chop that floating algae is a water circulator. Kasko is a common provider.

Last edited by Bill Cody; 08/18/16 08:51 PM.

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