Hi! I am in the process of setting up a fish tank and I am trying to figure out what I should use for a sump. I currently have a 55 gallon tank and was attempting to use a 20 gallon long for a DIY sump. The issue is that my stand has a base of 11.5 W by 47 L and the 20 long has slightly too much width. Does anyone have any suggestions? Maybe a 10 gallon (leader), two 10 gallon (leader) connected, or a 15 gallon high? I appreciate any feedback! Thanks!