I’ve purchased a new tank a Waterbox 110.4 tank. For lighting, I’ve purchased 2 AI Prime 16 HD’s. I’m planning on a mixed reef with both SPS and LPS Corals. The coverage of the Prime 16’s is 24”x 24’, the tank is 48” long, 20” wide and 22” in depth. My question is are just 2 of the Prime 16 had sufficient for the tank or should I purchase another light? Do I need to purchase a shade/diffuser as well? Thanks for you insights.