I have a 23 gallon half hex tank i purchased from a local here and the sump that came with it is a 5 gallon tall. Needless to say not many pumps will fit it because it is so narrow. I also have the problem that it does not hold enough macro algea and not much margin for error on over filling it. I need a custom sump made, any suggestions on a company that does not charge a ton for a custom smaller sized sump.