150w wasn't enough for SPS in my old Solana. That was a 20" cube.
A single 250w wasn't all that great over my current tank (36L x 24W x 26H) due to shadows so I added another. Things are great now but I have since added a chiller. I'd never again try and run a tank with a lone single point light source. So much of the corals is in shadow.
T5 would be a great option for this tank.
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