attach

Good morning, this is my first post. I placed a new crocea clam in my tank yesterday. Purchased on a frag plug and attached. I put it in chandlers rock frag plug hole. This morning I woke up it is in the sand in upright position attached to the chandler base but in sand. How do I get it to...

Got a jawbreaker several weeks ago, and within a week it detached (probably due to high flow or light?). Since then, I kept it inside of a container with small holes with low light... It yet to attach to anything. I've tried putting it under mesh on top of a rock, but no luck. Any ideas?