Well I see 1 problem, when you return pump fails or turns off, you drain your entire tank to the lowest hole in the return line. What I did is have the return line come all the way up above the surface of the water and then go back down. I also have a small bleed above the surface to break the vaccum when the pump shuts down. Also I have been told that you should have lots of surface movement toward you overflow(s) to get the best protein skiming action.
Return lines from tank level:
Return Lines from top:
Over flow towers:
Tank on the adjustable stand during construction:
My sump and refugium:
[ 09 December 2001: Message edited by: Lee ]