Tracy, how are you going to spread your gypsum? I've used tarps under bucket loads of gypsum, and a nozzled 2" pump to spread it. It went pretty quick. I think I have a video, I'll check. I need 20-30 tons gypsum myself, but we have to get it from OK, and it's $$$.
Al, why are u using the gypsum? And how often are you adding it to the pond? I am using it to increase my calcium which was really low. My hardness was ok but I would feel better about a higher ppm of calcium to assist in growing the lmb. Hay, if it helps to clear up some of my water that would be nice too.
OOPs, sorry Al I went back here and found out why u r adding the gyp.