Which invertabrates eat bubble algae?

[Porcupine Reefer]

are there any invertabrates that eat bubble algae adside from emerald crabs, my pufferfish possibly ate those but he leaves hermits and snails alone, any other options?

 

[Fish Styx]

If you trust them, emerald crabs. However, I would stick to females only.

Edit: duh. I should have read the entire post instead of just the question... I'll go stand in the corner with the pointy hat on.