UPDATE - Since my last post, the BTA had not moved.. he attached himself under that rock ledge and settled in. He looked great BTW.. But, I can't leave him there where the only way to view him is to hold a little mirror to the side of the tank.
So, Last night at lights off, I changed the direction of my waterflow. Instead of pointing the PH to the front of the tank, I pointed it to the back. Hoping a change of flow might entice him to relocate.
This morning he was still under the ledge. However, when my Actinics came on he immediatly left his spot and is now a few inches out. I'm hoping he'll move to the front of the tank now
Here's a pic of him taken just now from the front of the tank - visible behind the green rock