I would actually move the power heads to the side of the tank, toward the front, and facing toward the LR. that way the corals get flow and it will create flow in the back of the LR.
you could just add a maxi or something like that behind some rock on one side or the other and just have it pointed straight across the back. Keen reefs display had two modded maxis pointed straight down to the center kinda cool once the sand settles...
Looks like a coralife ss 65, definitly to small, add a sump and run a reef octopus or similar skimmer, good skimmer for money. If you need one, I have an overflow box good for 65 gallons
I don't think I'll be upgrading to a sump since I wanna get a 120 gallon one of these days. I moved the powerheads to the side and it's fixed the problem. Thank u all on ur advice