Removing the BTA, driving me crazy

[belzebuth]

Help !
Maybe you guys have an idea...During the heat wave my green BTA decided to split, leaving me now with two. My percs absolutely love it, they each have a home. I would like to remove the BTA and keep the clone since I like where it is(the front of the tank instead of the back).

The large BTA is on the back of the tank, her foot is crammed into a large rock, so removing the rock is out of question. I have tried the Koralia directly on her, no chance there.

Any other idea? I really want her gone