Review on Nutrafin Biological Filter Supplement 16 9 Ounce by Monique Ahn

I purchased this supplement for my aquarium hoping it would improve water quality .As a result of my tests I determined that it did not make any difference in the filtration process. The packaging also did not have clear instructions on how much to add to the water. One pro is that it did not affect the fish in any negative way. Overall, I do not recommend this product for Pet Supplies and think it`s a waste of money for aquarium hobbyists..