On my second bottle and it just does not work. Does not seem to have any live BB. Have been maintaining my tank's ph level, temperature, water changes etc. but adding this does not makes any difference. Do not buy unless you want a bottle of expensive water.

I recently had to replace my old filter with a new one resulting in the water becoming cloudy. It was then I realised that having had to use all new filter media I had lost all the bacteria in my filter, subsequent I bought a bottle of Quick Start. I was very impressed with the result, within 24 hours the water became much clearer. The tank is now crystal clear and the fish much more active. I just wish I had thought to order this product at the time of buying the new filter, it would have saved me an unnecessary journey and more importantly the stress caused to the fish.

Very simple to use. Has helped in keeping the biological parameters of the water of my aquariums in balance. I don't check my ammonia, nitrite and nitrate daily, but I keep very delicate freshwater fish (altums, u. ferndezyepezi, and other dithers from the Atabapo biotope). All my fish are healthy. I'm sure part of the reason is API Quickstart.