Hi, I'm building a water table to go with my soon to arrive bulltear 4'x4' gantry kit. I'm considering using a 42 gallon plastic water tank for the air bladder water table drainage reservoir. Does anyone have any experience with this type of tank? I would lay it on its side with the 1 1/4" hose barb closest to the floor and have the air in and out on the top. The water table will have 3" walls with 2 1/2"- 2 3/4" of water in it.