Tell me this is possible, and then tell me how to do it!
http://gizmodo.com/346527/fish-brid...iums-if-only-fish-were-smart-enough-to-use-it
http://gizmodo.com/346527/fish-brid...iums-if-only-fish-were-smart-enough-to-use-it
How do you suck the air out?
How high up out of the water can it go? The one in the link looks super high. I have a door between my tank and where the second tank would go, so it would have to extend about four feet out of the tank. Is that too far?