what is this on live rock


New Member
starting to see alot of these.I know its not aiptasia but is it good or a weed.will it take over tank or do I need to kill
brown starlike thing in center of picture


majano anemone. bad, VERY BAD. They will take over your tank if you let them and they will sting and destroy any coral that they touch. They're easy to remove, try joe's juice, boiling water, lemon juice or aiptasia-x and inject it into the center in their oral disc. SMOTHER THEM and you should be good.