Cool, my return pump is not a variable speed, I cant adjust it, I just get 500gph. My sump is not a true sump in the sense that there is no LR or anything. Its not partitioned, its a 30 gal tank, the overflow dumps into the back left corner, I have my skimmer in there, a hang on filter running carbon and phosguard bag and then going to my return pump... I figure with 140lbs of LR and 95 of sand in the tank I dont really need more in the sump, but it is a work in progress, waiting to get the glass panels so I can put in partitions and was gonna put abotu 15lbs of LR and some Chaeto in there...
I have a ball valve on the 2" PVC running from the overflow to the sump, but I have it full open...
I am gonna try the T in the return with 1 going to the DT and one feeding back into the sump... That seems like it might work, just gonna have to tweak the valves to get it consistant.