zoa eating Asterina control

[rtelles]

There are asterinas in my tank that are laying waste to my zoas. It's only a 20g nuvo, currently fallow due to an ich outbreak over a month ago, and I won't be adding any fish until February. Given the tank's small size, I guess I could try manual removal, but I know that it won't actually fix the issue. I also don't necessarily want to go with the nuclear option and get a harlequin shrimp or pair, since they'll only have a few week's worth of food before they clear out all of the starfish. Does anyone have experience with bumblebee shrimp?