I read some on RC about these and most say they don't have the starting issues of the old RIOs. Most there go with the 820 though. This is a lot of flow!
Darin, can you meet or beat the Marine Depot price for the 620? PM me what you can do or post here. Might get some orders going
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,