Well this is my oldest coral I have it for about 7 years I thought I lost eveything when my tank crash!! then i found a peace of my Devil's Hand Leather Coral the size of a pea and it came back to a nice size now then last week it letgo of the rock it was on now I can't get the coral to stick on anything I tryed gel glue it stays for a day or so then off again. what it the best way to get it to stay put!!!