The scourge of the reef tank! With a million ways to get rid of them and for me not one works well! Ron got so PO'd he too a whole rock out of the center of our tank and put it out in the garden! Now I have a chunk of bleached coral rock in my yard! lol
peppermint shrimp work great for them. i have 2 and they keep my tank free of them.. :D also you can use pickeling lime. i think its 1tsp lime to 2tbsp of water heat in microwave for 40 sec. use a syringe and squirt it in their mouths. its best if you turn your pumps off when you do it.