Sump/refuge Bulid Question

yukon

Member
I'm Building a sump/fuge out of a 20gal long aquarium. I pretty much have my design figured out and have the glass to silicone in,but I'm not sure how big of a space to leave for the skimmer. I'm waiting on a Auqa C EV 120 with a Mag 5 pump that was ordered and not yet here. I know the foot print of the Skimmer is 4.75 x 8.5. put with the mag 5 and all connections how big of a space do I really need. The tank itself is 11 3/4" wide on the inside. So if I go 10" x 11 3/4 for the skimmer section will that be big enough?
 
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