I was thinking of putting a sea hare in my tank as I have a little hair algae starting to show up. I think it came in on a frag plug. I dont want to crash my tank so wondered if any types of fish will harass the slug and cause it to put out toxins. My parameters are good and the algae is not really spreading too much, and I can not remove the rock to clean it. I could take it back to the LFS after it eats its fill so it will find a new home full of food. Just concerned about the chance to cause more problems than simply watching the small amount of hair algae.