Hiya tangcich and welcome to Aquariumadvice
I went n looked Fritz up. Actually, its no different then Cycle or many of the other bacterial starters one sees in the lfs (at least the freshwater version). Bio-Spira is different. Turns out, the bacteria most companies thought was the correct bacteria for cycling a tank (nitrobacter for example) is NOT the correct bacteria. Only Bio-Spira contains Nitrospira and Nitrosospira, which turns out to be the right stuff (all of em also contain nitrosomonas which is another nitrifying bacteria). Is why, when a bag of Bio-Spira is not defective, it cycles a tank instantly, as opposed to taking a week long.
I went n looked Fritz up. Actually, its no different then Cycle or many of the other bacterial starters one sees in the lfs (at least the freshwater version). Bio-Spira is different. Turns out, the bacteria most companies thought was the correct bacteria for cycling a tank (nitrobacter for example) is NOT the correct bacteria. Only Bio-Spira contains Nitrospira and Nitrosospira, which turns out to be the right stuff (all of em also contain nitrosomonas which is another nitrifying bacteria). Is why, when a bag of Bio-Spira is not defective, it cycles a tank instantly, as opposed to taking a week long.