Dr. Tim’s Aquatics Freshwater One & Only Nitrifying Bacteria – for New Fish Tanks, Aquariums, Water Filtering, Disease Treatment – Eco-Friendly Fish Tank Cleaner – Removes Toxins – 4 OzTHE BEST WAY TO SANITIZE A FRESHWATER AQUARIUM: Freshwater One & Only from Dr. Tims Aquatics quickly converts waste in aquariums and fish tanks to a non toxic form. Utilize this powerful solution when setting up new fish tanks, while cleaning filters or adding new fish or after a water change. REMOVES HARMFUL TOXINS FROM FRESHWATER FISH TANKS: Even with regular water changes and maintenance, aquariums and fish tanks produces bad bacteria and it can