and almost magic in the way it works. i have seen it clear a green and murky fountain to crystal clear water in 24 hours. it does not hurt the wildlife either, because it turns into oxygen by the time those 24 hours are up! have never been so confident in my own skin! the best feeling in the world is being able to go out in public with no make up on and feel good about yourself! the staff is very knowledgeable and always professional. i would and have recommended them to everyone! 