Thanks! It actually worked out perfectly because I was about to silicone the baffles into the sump and then I saw your post. I held off until I had the skimmer and it turns out I had to make the skimmer section an inch wider than I had planned. It fits beautifully now I turned it on today and man that thing is awesome! No microbubbles whatsoever, very easy to dial in, and its already skimming stuff out of the very clean water. I think its pulling the gunk from the sandstorm. I actually just got a lid cut at TAP plastics today for the ATO reservoir. I got it in black acrylic so it will minimize light getting in from the fuge light as well. The top off section is about 4 gallons.