My LFS had a chunk of rock with some really nice sea grass, so while getting it bagged I spied a kinda glowing little nubbet in the bottom of the tank, I asked O Whats That!! he said take it home and when it grows up you tell me. So now I have this 1/2 dime sized glowy mass with what looks like euphyllia tentacles on it. They had a large shipment a while back, could it be a head that fell off? Ive got it trapped in an acrylic ring to grow out, its too small to get a pic but it seem to be growing, under a magnifying glass the tips look like a yellow dot, do I need to glue it or just let it grow?