So I've been kicking this idea around for some time of a fuge to sit on top of the sump. I have the room, and an old Reef Lake sump that has donated itself to the cause. Gonna put a tray of mud in it as well as a 4" remote deep sand bed with assorted algaes in there. Pics will come some time this weekend as I still need a bag of sand to do the photo shoot. I got a returned fuge light from Amazon for and change delivered so this is gonna be on the cheap cheap because I'm going to tap into the return for water to the fuge. I have already bored out a 46mm hole in the bottom for the standpipe return to the sump. I just don't have the room in my sump for algae and I'm not sure I want it there, there's already a 70mm deep sand bed in there.