Table holds 8 gallons, but I did not want to worry about pump cavitation if I filled the table plump full and run the reservoir low. I am not too worried about the pump. It has a rubber impeller similar to a outboard boat motor water pump. It came with 2. I have a 30 mesh screen on the inlet/outlet that will keep the big stuff out, this is held on with neodymium magnets, between the mesh and the magnets the water stays pretty clean. I am hoping the combo of that the pump will be fine for a couple years or so… I think depending on what kind of coolant brew I use will eat that rubber impeller up first.
I really like the air pressure design. I think could work very well also, neat design.