[Paul B]

The only criticism I can offer is that a 10" lion fish is probably equal to about 6 medium sized tangs. It can live fine in that tank but should not have been added so soon. When you cycle a tank with as an example three damsels, then the tank has sufficient bacteria to process the waste of three damsels.
To add a 10" fish so soon would overwhelm the esisting bacteria and could cause a severe bacterial bloom or a large ammonia spike. Of course it may not do anything. But you really should add life slower to give the bacteria a chance to catch up.
Good luck. The Lion is beautiful.
Paul