If your going to keep some sps at the top and softies or lps at the bottom the ap9x should work. If your trying to have wall to wall sps then maybe consider a hybrid fixture. Right now my tanks pretty new and I have 3 360x above with plans to add a 4th and maybe a 5th. Even though the corals aren’t super thick. I can see how shadowing is affecting some pieces. I will probably end up with 5 360x and 2 t5 running across the tank. My plan is wall to wall sps. For your setup maybe 2 360x on one of those hybrid fixures may work well.Initially I want corals that I won't kill! So softies, LPSs. I do love acros though and hope to eventually be able to grow those. I was looking at getting a Kessill ap9x. Do you think 1 of those will be enough?