Much as i do love the 400 series there were too many little things that pissed me off to buy another one so going to try my hand at a custom tank next year. Nothing is clear in the brain box yet but a 3x4x2 would work well for where I want to place it, viewable from 3 sides with the weir at one end of a 3 foot side near the wall. Lol don't get me wrong, not giving up my 400 for anything, just little things annoyed me that have been a pain in the butt and back to get to how I want them................didn't help not doing them when it was dry of course :rolleyes.