I had two for a while then they went were they were not suppose to and got ate, great cleaner and they will eat a'lot of algae in a short period of time what type of sea hair are you getting I had the alypsia from blue zoo great animals and they will let loose a very detrimental puff of stuff if spooked or if they feel a threat if this happend and I knew it i would just run light carbon and do a 10% water change . best of luck oh and they are basically blind