I’m plumbing my reef tank I currently have a 1 1/2 inch drain line and my returns are 1 inch pipes but at the point where the loc line comes out it’s half inch that’s as far as loc line will go any advice whether I should make the drain and return smaller or larger my guess is go as big as I can and put ball valves also does any body know what the turn over for this size aquarium should be I plan on using a ecotech L2 for my return I could never get my head around the correct turn over for a sump and a reef aquarium any advice would be appreciated thanks