Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations SMB / YP / RES - Now what?

I can't imagine that the GSHs would be a problem in your pond if your SM and YP are already 9"+. Some of the other species that others have mentioned may be better options, but I would highly doubt you'd get an excess of 6"+ GSH when your predators are already stocked JMHO.