Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Welcome Offer : Use Code WELCOME5 for 5% OFF your first order!
Free Shipping Across the USA
Some products sold on this website may expose you to chemicals known to the State of
California to cause cancer, birth defects, or other reproductive harm.
Establish Biological Filtration in Saltwater Aquariums
Dr. Tim’s One & Only contains live ammonia- and nitrite-oxidizing bacteria that help establish and replenish biological filtration in new and existing saltwater aquariums.
Key Benefits
Supports the Nitrogen Cycle: Helps convert ammonia and nitrite as part of the aquarium’s natural biological filtration process.
Ideal for New Aquariums: Helps establish beneficial bacteria and reduce the cycling time associated with new tank syndrome.
Replenishes the Biofilter: Useful after water changes, filter cleaning, adding livestock or completing a disease-treatment process.
Live Bacteria Formula: Contains a microbial community of naturally occurring nitrifying bacteria without sulfur odors.
Three Size Options: Available in 2 oz, 4 oz and 8 oz bottles.
Directions
Dechlorinate the aquarium water and make sure the filtration system is operating before use. Shake the bottle thoroughly and add a minimum of 10 ml per 10 gallons of aquarium water. For best results, use the entire bottle at one time and follow all instructions printed on the product label.
Product Details
Formulated specifically for saltwater and reef aquariums
Available sizes: 2 oz, 4 oz and 8 oz
Minimum dosage: 10 ml per 10 gallons
Can be added directly to the aquarium or biological filter media
Do not freeze; refrigerate for the longest shelf life
Important: One & Only supports biological filtration but does not replace regular water testing, maintenance or water changes. It does not remove nitrate and is not a fish-disease treatment. Continue monitoring ammonia and nitrite when cycling an aquarium or adding livestock.
Select the appropriate bottle size and help establish a healthier biological foundation for your saltwater aquarium.
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