The debating is over, I'm building a 55 gallon sump for my 135 slider/sunfish tank. Problem is, I do not know how to even start. I've been reading about the size piping and GPH
rating for both input and output and I'm getting confused to say the least. My tank is not drilled and I want to know the best way to go about this to create a fail safe sump without drilling. I know many are successful doing this so if anyone can point me to a build thread or give me any step by step info I would really appreciate it.