Originally posted by Pottsy:
Sheetrock will turn to muck when exposed to water. There will be zero structure advantage, though perhaps some from the gypsum... but I would be wary of the fact that their could be other chemicals in there?
I don't recommend putting gypsum board in the pond. If you put Type X (5/8" fire rated board) you'll end up with lots of chopped glass fibers on the bottom. Additionally, if you dump a lot of board in the pond, when the gypsum core begins to dissolve, you can get some hydrogen sulfide gas start to form.
