Hey guys I am new here and I have a couple of questions how to set up my new 135 gal. It has 2 built in overflows (one in each corner) and 2 holes in the bottom of each overflow. I am going to run a sump off of the aquarium. My questions are; how do I pipe the water out of the overflow holes to the sump/ and return it to the tank? Do I just have one tube come off the bottom of the tank and drain into the sump, and then return it via a pump, or do I have to do something different?