I am thinking about adding a sump onto my system if I can get a 20 long to fit under my stand than I will do that for my sump. There is the possibility that I may not be able to get the 20 long to fit due to the fact of the center brace in the front and back of the stand. If that does not work my other options would be either a 20 tall or a 15, which would be the better choice if I end up having to go this route? Also any information someone can point me to in knowing how to choose the return pump that I would need would need to pump the water up about 50 inches. For the sump I am planning on a simple design with baffles and having the center as a refugium. Right now I am using an hob skimmer on my 72 gal bf that if I am able to make work hanging off the sump I would move down there. Otherwise I would continue to run my current skimmer and later down the road upgrade to a skimmer that I could put into the sump, but that will be awhile if I do. Thanks.

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