1" plus specifically for Jebaos? Most manufactured returns are 3/4".
Uh, oh. Not good. We were charged for a 12,000. But they sent a 1,200. 34 days ago.
I'm running a DCT15000, it is a 1.5" NPT, thus I used a 2" PVC female adaptor. I reduced this to 1.5" PVC to return to my 170G. At 2/10 flow rate selected, and a 4.5' head, I'm probably getting 1000 gph. One union, one full port ball valve Union, 2x sweep 45*, 3x sweep 90* elbows.