UPDATE

So I wanted to try a theory before I went for the clearigate or harpoon... I put in a max rate dose of CuSO4 with a HEALTHY shot of surfactant on a 4 acre pond that was moderately infested. Just got back from there (2 weeks post treat) and its looking very good. Hopefully its not just the cool nights and its my cocktail thats doing it.

Justin McLeod
If you don't know where to start, go back to the beginning.

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http://www.thepondguy.com