I just set up my 112G and now I'm trying to figure out how I want to partition off the sump. The sump is a 40 gallon custom acrylic tank (48Lx12Wx16H). Should I go with 4 chambers all equal in size? Should I make only 1 bubble trap right before the return chamber? Any opinions/advice is greatly appreciated. PS what submersible return pump would you recommend?