It's actually a 40 breeder. I thought It would be best to size up on a pump in case the performance goes way down under my head pressure. Regardless, I can adjust it if it's an overkill. Only thing I'm worried about now is I have a 1/2" return line that I should probably upgrade to 3/4". Unless you think I could get away with 1/2"That is probably how it was set up before and would work if you did it that way again.
I run a jebao return pump. I bought 2 of them for the same price of one of the "better" ones and put the second on a shelf as a backup. I don't want to wait a week for a new pump to arrive when, not if, the return pump fails. I don't see how big your display tank is, but I'm guessing ~75 gallons? If so, the 4000L pump will work just fine.
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