. Sorry guys! This is an upgrade from my 55....those tanks are just too narrow to get any good scaping going. Plus my rainbows are getting pretty big and might like the extra elbow room. I was thinking of keeping the 55 with the thought of eventually moving the 30 g reef in there but I really like the 30g, and I also don't have the money for a larger reef tank (you all know how $$$ they are!). so we'll see. I'm probably not going to move until the fall (my lease is up at the end of Nov.) so this will be on hold for a while, but I am excited!