Hello, I have two fish tanks next to each other. One is big (36 gallons, about 2 feet tall), one is smaller (10 gallons, about a foot tall). I want to make a connective tube so that my eel can swim between the two tanks but I don't want either tank to overflow. I am not adverse to raising the shorter tank on wooden planks. Is there a way to make this work or am I doomed to failure? Also if my eel swims through it will it make a siphon and flood a tank? EDIT: The tube goes over the tops of the fish tanks, not through the walls.