My fish love bubble but leave my halimeda & red halimenia alone. Yellow tangs, elongate tang, queen angel & koran; although, if your's is a reef tank, skip the angels
When I harvest bubble out of my other tanks, I just toss it in to my main fish tank as a treat. They even prefer bubble to sushi sheets.
Just had a thought. By bubble, are you refering to grape caulerpa or to those really hard marble-like encrusting algae. Nothing I have goes near the marbles.
