Drilling question

[jbryks]

hello everyone...i am new to this site and have a couple of question about my project that i am working on...i have a 33 gallon dt with a 20 long sump..i have the stand built and the sump finished and now it time to drill the tank...i got the holesaw bits but my question is in the tank i was thinking one return on each side of the tank with the overflow in the center....can i just put a durso standpipe there or do i need to build a overflow box....any help would apperiated


jordan