150 gallon w/ sump

So I have had this zoa in my tank for about 2 or so weeks. Got it as a test coral to see where my tank is at and see if I would be ready for more. However the zoa went square and has stayed this way for a little over a week. Am I doing something wrong? Feed it every other day lights were blue...

I have a 150 gallon tank with a 40 gallon sump. I want to get 3 clown different ocellaris clowns and a emperor angelfish(I understand I will need a bigger tank eventually but for the moment this will do). Rn I have about 3 weeks running tank with no fish I used fishless fuel to start the tank...