Putting in a basement sump, main tank is upstairs. How can I add a 30 gallon tank that is in the basement to the same system without putting the sump on the floor to allow gravity to power the out flow from the small tank to the sump? I want to have the sump at waist level for ease of maintenance. Has anyone done this? If using a pump or pumps, in and out would have to be identical right? Is this possible?