I just got one of these. I am over run with aptasia. It’s to the point that if this guy doesn’t work then I am going to restart the tank. I hope he works. He’s been in the tank 2 days and has only nipped at some frozen food I’ve fed the tank with. He needs to get started because he’s got a lot of work to do.If you want to rid yourself of aptasia - https://www.liveaquaria.com/product/prod_display.cfm?c=3352+6697+3555&pcatid=3555
After about a week these guys are like lawnmowers towards aptasia