Sallys eating my coraline

[Goblin]

Hello all, my sally light foot has done a great job cleaning my reef......Too good of job. Now it's eating my coraline. I have a 175 gallon tank with 250+ pounds of LR. This little crab is getting around the whole tank and the coraline is noticably deminishing. I have sat and watched this crab eating it. Is there anything that I can feed this crab to save my coraline? Does anyone have any pointers on how I can get rid of this crab if not? Thanks for any help.....

[OrionGirl]

For a sally to go after corraline, you must not have much else in there for it to eat. Try feeding a single sinking wafer or algae wafer 2-3 times a week.