Thats a bummer, my tank is crammed full with only a small space to put a BTA. I was hoping to place a small dish buried in the sand and hope to place him there and not wander across the sans and depending on direction he will either climb the glass or meet a Torch or Hammer.Welcome
With little real estate left in your tank, you might consider another tank for the BTA. BTAs do not stay in place, and they will kill your corals. Also possible for coral to kill anemones including BTAs.
While we have multiple anemones hosting multiple clowns, we are giving our BTAs away this week. They may stay in one place for months or longer, but then when they decide to roam, there must be a reef law that says go to your favorite and/or most expensive coral and kill it. We gave the anemone's 1/3 of our tank and cut back from 13 to 4, but now those last 4 must leave us because they just aren't compatible with our corals.