Hi Vic, my Lionfish is fed every second, sometimes third day. The only tankmate is a Neon Damsel I was regrettably talked into buying some time ago. I've tried "transplanting" Caulerpa from my 60g but the Damsel consumes it all very quickly. The Damsel is also very effective at consuming the "food explosion" when the Lionfish is fed. They(Lionfish) are terribly messy feeders but in my world, a "must have" fish for marine enthusiasts.
I want to include a Tang, probably a Yellow, and perhaps for the fourth "tenant", I'm considering an Angel, maybe a Queen or a Dwarf species, not sure yet.
I need this tank to establish itself as it has undergone many moves and "alterations" since it has been in my care. Algae control is a must as it a disgrace when compared to my 60g. I think Emily is correct regarding
skimming and I may have to upgrade prior to any additional livestock.

ps The finger is feeling much better today ! :D

I can only offer this; No algae problem; No RO/DI; No skimmer; no water changes All I use is a refugium with Caulerpa. Have never had any problems. I like things as natural as possible. :D :D