I recently moved to a house that has a large (6' X 6') fountain basin sunken (about 2.5' - 3' deep) with its top rim nearly flush to the ground. It looks like it's made of thick plastic or fiberglass and has Rubbermaid markings on two sides. I've noticed that even with recent rains, it's maintained a fairly consistent water level of only about 1'. I'd like to raise the depth enough to where I could add fish, but I'm not exactly sure how that would work. Will the basin overflow during heavy rains, or is there some sort of valve I can't see that runs the overage away? If I'm able to make it deep enough for the fish, could I leave it filled all winter without cracking the basin when it freezes? I did notice that the man I bought the house from had drained it this past winter.
I live in Ohio, if that gives you a sense of the climate. Any help would be greatly appreciated!
I live in Ohio, if that gives you a sense of the climate. Any help would be greatly appreciated!