Bubble tips like to sink their foot into a crevice. It's gonna move till it finds a spot it likes
Sent from my iPhone using Tapatalk
Took my rainbow BTA about two weeks of inching here and there before it settled in (I hope for good since I had to move my Aussie Gold Torch over a little). It moved about 6" from where I placed it and it did plant its foot in a crevice like @Vhuang168 said.