i got some pylops yesterday the guy said there easy so i put in my 35g tank to see what it would do i got some live rock and there was a brown thing that much look like a long haired pylop and it three times the size when i frist seen it. so i thought id try this frag only 20 bucks and when i got it home . the one end was lose so i pulled it off and made two ,but do i have to glue to live rock or will it attach it self?