Years ago I ran an Aquapod 24. I had a small glass tank built to fit into the cabinet. 13"x 13"x 7". I put an overflow into 1 of the rear chambers of the display, feeding the refugium below with 2 chambers, the fuge and a return chamber. It worked great, the fuge was ample size for the tank and I was also able to mount a tunze nano skimmer in one corner of the fuge. Plenty of pods and cheato for nutrient export. I ran mine with about 2" of sand as well as the chaeto. Lifereef makes a nano overflow that fit perfectly into the rear chamber of the display tank.