• Eliminates new tank syndrome
• Instantly creates a biofilter
• Removes toxic ammonia and nitrite, naturally
• No sulfur or other offensive odors
• No wait needed
• 100% natural

Good for 6 months at room temperature, 1 year at 50F. Best to keep refrigerated for longest shelf life.

One & Only Live Nitrifying Bacteria prevents new tank syndrome by instantly working to establish a biofilter in newly set-up aquaria. Use One & Only to control ammonia and nitrite levels