I have seen one GC denude a 0.25 ac pond that had small pondweed and water lilies. I would start with one GC and see what it can do in 2016 & 2017. One GC and TP should make a big reduction in your pond plants in 2016. Then revaluate. GC are easy to stock very difficult to remove. GC can be stocked most anytime they are available.

Last edited by Bill Cody; 05/24/16 09:02 AM.

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