I used a 10 gallon tank for a sump / fuge for my 29. I cant really take a picture now as its under the stand but I basically used acrylic to divide it in half one side for fuge other side for sump. Then there are 2 acrylic baffles on the sump side to avoid bubbles. The biggest problem I havewith it is the heater is so long it has to sit diagonal on the bottom of the sump side, but it works great other than that.