is fish only with live rock. If you have a coral I wouldn't consider it a fowlr
tank. The 46 gallon tank is too small for the 2 angels. The Emperor angel gets to over a foot and needs 220 gallons! It doesn't take a long time for them to grow big and become more aggressive since there is not a huge territory for them to claim. Research is very important and I think you should before buying fish that are too large or incompatible with the other fish. That's also a major bioload with those angels you are putting on the system. I really recommend you return them before getting larger problems. What are you willing to spend on a protein skimmer because most are costly. Reef Octupus, AquaC Remora are probably the top most popular and high quality brands. I heard Hydor slim skimmers are actually good, and there's aquamaxx and a bunch others.