I have a 125 gallon tank and i was wondering what size of sump i should use? i was thinking ofhaveing two 20 gallons one refuge and the othera tank with heater/filter/protein skimmeruv.etc..
A 55 gallon would be my vote, you can cut a hole in the side of the stand and put a trim around the piece you cut out and then stick it back in and nobody will really be the wiser. Saves you from having to mess with taking the back brace out.