FWIW I know you’re getting recommendations of medium flow and light.
Mine is growing at a near nuisance pace. It is 2” below the water surface under an 8 bulb ati sunpower loaded with blue+ and 6500k bulbs. It’s being nailed from the top by the return spout, and from each side almost directly by Tunze 6105’s at 100%.
In short. It is being absolutely brutalized by light and flow. I don’t have a par meter but based on the data out there on this fixture, it’s getting 700+ par, and right in the middle of close to 5000 gph total coming from all sides. Color is terrific. Colony is about a 12” wide table, and the branches are as thick as my thumb. I can’t even clip them with bone cutters. They definitely don’t require medium to low light and flow.