Since I was alerted in a hunting business of competent fish farmers on "Easy-Life" a few years ago, I can not imagine a (partial) water changes without this "magical" water conditioner. My freshwater aquarium fish, catfish etc. thrive and seem actually to most stress conditions (change in water temperature maintenance in pools etc.) to be better prepared than ever before. Diseases such as fungus or the like, I no longer can see since the regular, moderate addition of Easy-Life. On the contrary: all the inhabitants of my aquarium make a lasting impression and achieve magnificent "felt" an older age. After initial regular water testing (pH, water hardness, etc.) I have now already eternally no longer reach into the laboratory case - simply because I observe every day, that everything works well. Whether Easy-Life has a positive effect on, among others, plant growth and a reduction in the growth of algae (as it applies to the manufacturer), I can not judge. This is possible, of course ...; o) Oh - Easy-Life is very economical in use and is used up (depending on pool size) over several years, without losing its potency (own experience). Strong buy recommendation!