ikazamay
New Member
My dad just got me a used 40 gallon tank, on the back I think it has a build in sump. I have a basic idea how it works but not sure what kind of return pump I need to connect to the return pipe. It size is about .8" OD .5" ID. I am planning on using this tank as a refugium for a 60 gallon tank. Any thoughts would be appreciated, Thanks in advance.
