I was searching on an aquarium providers website and they say they can turn your tank order into a "reef ready" (with overflow on back pannel, and holes drilled) for additional $75. I was wondering if this was even necessary? Because I almost turned my 75g tank into a SW
tank and it has neither of them. So my question is do you have to have a reef ready tank to set up a SW
tank if your going to have a sump etc? and whats the overflow on the back pannel exactly for?
also couldn't you just have the tubing going from your tank to your sump hang over the back of the tank like a canister filter?
thanks for any help