Thank you all for your post. As far as the back round goes, i was thinking of doing either black or Dark glossy blue. For the return tube i was going to let the plants cover it up but, i need to find a plant the like water movement to put there that I like. The CO2 injection like it temp till i fork over the money for CO2 from PB injection system and decide how I’m going to get that in the sump 8>.