I have some zoas that I want to put back in DBTC and some to add on. I tried fragging 2 little polyps for practice but didnt make it. main colony is currently overtaking the plug it came on. I used a scalpel to cut the 2 heads and glued it to a new plug. it never opened up and the 2 polyps are now completly gone after 5-6 weeks. What am i doing wrong and whats the best way to frag Zoanthids?