One and Only Live Nitrifying Bacteria removes toxic ammonia and nitrite, instantly working to prevent new tank syndrome by establishing a biological filter in your newly set-up aquarium. Use when setting up a new tank, after a disease treatment or water changes. 2 oz size for freshwater aquaria up to 30 gallons. One and Only has no sulfur or other offensive odors. Made by the recognized expert in aquarium nitrification and microbiology.
- Removes toxic ammonia and nitrite, naturally, using the right beneficial bacteria
- Eliminates new tank syndrome
- Safely add fish immediately
- 100% Natural live nitrifying bacteria
- Cannot be overdosed