Picked up a new BTA to go along with my healthy long tentacle in my 90 gallon tank. I have two rock clusters and put the BTA in the tank on the cluster opposite my existing LTA. Sure enough the BTA on its first night in the tank chose a spot in a cave directly behind my existing LTA. From what I can tell it is doing fine but am concerned that it won't get the light and nutrients it needs back there. Do I attempt to move it or let him come up for air when he wants it? It's been in the tank now for 4 days.