Has anyone ever seen or done this? I haven't yet but will one day. Its really easy to do. Just get some clear pvc and make it large enough diameter for your fish to swim through and put 90degree elbows facing down into the aquarium on the ends then another 90degree facing in the aquarium. Its kinda hard to get all the air out basically you just put it upside down on top of the tanks its going over and then fill it completely water then put something like two hard food plates over the ends and flip it over and put into the tank. The fish might take a while to actually swim through it but once they do they will like it. I think you can create water movement through the tube by haveing a canister filter and putting the input on one tank and the output on the other tank.
Also the water level of both tanks will be exactly the same.
I want to do this some day, I think it would be cool!
Also the water level of both tanks will be exactly the same.
I want to do this some day, I think it would be cool!