Hey everyone, I’m pretty new to reefing and im currently going from a 40 gal fish only setup to a used 120g tank. The tank has one corner overflow with one drain 1” and one return 3/4”. I got a 40gal glass tank and ordered pre made baffles to build my sump. I am trying to decide the best direction to go for plumbing everything. Should i get two return pumps? Do i create an emergency drain and plumb a separate return line? Is it better for my tank to drain directly down into the sump and have stronger return pumps or should i have the tank drain to the opposite side of the sump and have the return pump do less work? I have two reactors and a uv sterilizer to plumb as well. I can post pictures later tonight. Im starting from scratch and ive seen so many setups with plumbing that i cant decide what is best. Thanks in advance!