BM61, GC can cause muddy water if the stocking rate is too heavy for the plants available to them. You stock yours at the same rate per acre that we do, and we don't have any turbidity either. I'm good with that.
What's neat is to watch GC eat freshly emergent coontail. At least here, they swim up to the plant, do a violent twist, and rip the coontail out of the pond bottom. It looks like a mini mushroom cloud as they swim away.
