Agree with the points above about keeping temperature below 30degC.
My experience with non chilled tank :
Can keep some more tolerant zoanthids in such conditions. Some will melt.
Can keep green star polyp (GSP)
Can keep forest fire cloves
Cannot keep Purple cespitularia
You can see some pictures in this post : https://www.sgreefclub.com/forum/topic/142862-my-slice-of-nature-part-3/?do=findComment&comment=1298008