Looking for crafty sump ideas, I will be needing a sump in the 150-220 gallon ballpark but will have to fit under my stand, stand inside dems will be 20' long 25" front to back 36" tall. I can't find any used aquariums for a good price in this size range so I'm going to have to get creative. Been leaning towards plywood frame pond liner membrane but was wondering if anyone else has other ideas? Pics welcomed as well thanks