Working on a new build and I have a fixed acrylic sump 36”Lx15”W that has 2 fixed baffles each different dimensions inside. Will be using a filter roller Mat in 1st chamber, refugium in 2nd, and was going to put skimmer & return pump in same chamber in 3rd. Would it oxygenate the tank more being last. My questions is- Does the skimmer have to go before the fuge? or it doesn’t matter it’s just a box to hold equipment. The other option is getting a 40 breeder 18” wider but would have to spend more money on baffles and its glass. Or is an acrylic sump hands down a better option for a sump. Need some advice- to many Options is driving me nuts