Marc's got a plethora of asterina starfish that do a wonderful job of removing coralline. I've got a few myself and wish I could get rid of them. :D said:Really? Mine only eat green algae - which I have plenty of. I'm trying to get rid of GREEN coralline, too - scraping it off means it only comes back a darker green. Yuck. I did have plenty of pink, but I think phosphates have taken over, and the asterinas love it :wink: