I am looking for an overflow box for my 75 gallon reef tank. Which would be the best overflow box? I have heard good and bad things about the CPR overflows. Any thoughts out there?
They work well. Get the "special edition" or whatever they're calling it. It's a lot quieter. You will need a small pump to keep air out of the syphon, and to pump air out of the C-tube in the event of a power outage.
