In my new 125g I will be running 4 powerheads, I figure I'll put 2 on each side glass. Maybe you can messa round with them and see where the flow is needed most. When I put in fish food I can see how my flow goes based on where the food goes. LOL If it starts to build up anywhere theres a dead spot. Me and my stupid tests.
Maybe mount twop on one side, one near the back glass and one near the front glass, you have the depth on that tank to do that.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.