I'm considering one of those for a frag/coral quarantine. Any reason to run them like that instead of lengthwise with the width?
I have a center overflow on my 90 too and hate it. Takes up way too much room. With the 18" depth I really need to change mine or put in a synergy reef overflow,SRO. I have one sitting on the floor but am contemplating an upgrade instead and using the SRO on the new tank. I would probably do a 60x30 if I did.