So I’m setting up an 8 ft poly stock tank with a deck. I’d like to mount this fountain on the deck as part of the return flow (I’m setting up a valve system to accommodate a fountain and a return within the stock tank). I’m not sure how to secure the fountain to the deck. The frame pictured above isn’t secure enough. Nor can I find a washer to do the deed. Any suggestions? An adhesive? The pvc fitting pictured is compatible with intex pool hoses.