Thanks for the input Tracy! 500 would be about 1000/acre. I was going with this number as I was thinking there will initially be high predation until they get settled in.

My understanding is Northern Crayfish will definitely eat veggies and also burrow. I have an abundance of FA, which is one of the reasons I want to stock them but, there is no guarantee they would target that instead of my more desirable plants. Tilapia for FA control is not an option in Illinois. I'm not sure burrowing is a big problem for me as my pond is a water table pond and has no dam. Hopefully, Bill C. will chime in with additional thoughts.

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