Plug and play link said:
RBTA looks great so does the LTA but he wont settle/attach
By that you don't mean he's let go and is floating do you?
It's just crawling around the glass/rocks etc. and won't stay put right? If it has folded up it's foot and is bobbing around that is full escape mode hoping for the tides to take it somewhere else or it's foot was damaged when you got it.
Water param's are all good?? Is the BTA huge or a colony of many? Any other aggressive tank mates like Euphyllia sp. (torch, elegance, frogspawn etc.). Don't know where you got it but, it didn't get lifted out of the water while transferring, did it?
This might be opposite to some of the advice, but mine have never dug into the sand bed first. They attach to the glass or a piece of rock, then once they are where they want to be, they work their foot down the rock and into the sand bed. So, hopefully, once it has picked a rock, you need to make sure that it will find a nice sand bed at the base so that it will settle there.
Not trying to be negative...no really I'm not...but LTA's are fish eaters like the big carpets but with more reach. Clowns and large fish only in a tank with them unless you're a gambler... Yet another thing that I learned the hard way many years ago...
