@MnFish1 pH was between 8.1 and 8.3 Im not saying anything is correct about what prime claims to do. It very well maybe another case of Vibrant. But What I do know is that it has undoubtedly helped me over the years in both fresh and salt to deal with ammonia in a pinch. I am curious to see if prime has a sort of mythical ammonia attribute that isnt quite as advertised.