I have had my Sea Hare for over a year. He is wonderful. When my tank is clean, I scoop him up and float him in the other tank for 20-30 min. and release. If there isn't much green hair, I add some sea weed on a clip at dark time. (so other fish don't get it first) He will find it and loves it too. During the day, he buries himself in the sand, so be careful rearranging rock. Mine climbs on my Kor 4, cleaning the outside, I do have protective shields on the fronts just in case. Once, he cleaned my over flo, found him wedged next to the grill and used a wood dowel rod to gently flip him back in the tank without issue. Amazing to watch and surprisingly, rarely rearranges my tank.