- Sku: 210878
- Vendor: DrTim’s Aquatics
Dr. Tim’s One & Only – Live Nitrifying Bacteria (Saltwater) – 8 oz
Dr. Tim’s One & Only – Live Nitrifying Bacteria (Saltwater) – 8 oz
For larger systems and heavy stocking, One & Only provides a robust population of live nitrifiers to quickly establish biological filtration and keep ammonia/nitrite in check. 🌟
🧪 How to Use
Shake well. Dose 10 mL per 10 gallons; match bottle size to system volume and use the full bottle for fastest results. After dosing, turn off UV, ozone, and skimmer and remove filter socks for 48 hours to help bacteria colonize.
✨ Why One & Only
Eliminates New Tank Syndrome, reduces cycle time, and contains no sulfur odors. Great after maintenance or treatments to stabilize your biofilter.
🧊 Storage & Handling
6 months at room temp or 1 year at 50 °F (10 °C); refrigerate for longest life. Do not freeze.
Key Features
- Treats up to ~120 gallons
- Instant biofilter with living nitrifying bacteria
- 100% natural; reef‑safe; no sulfur smell
- Ideal with Dr. Tim’s Ammonium Chloride for fishless cycling
What’s Included
- One 8 oz (237 mL) bottle of One & Only – Saltwater
Trusted by pros and hobbyists for fast, reliable cycling and recovery—especially on larger systems. 🚀
More Information
Item | One & Only – Saltwater – 8 oz |
Brand | Dr. Tim’s Aquatics |
Manufacturer UPC | 812540012029 |
Treats | ~120 gal (454 L) |
Dosage | 10 mL per 10 gal; best to use full bottle |
After Dosing | Skimmer/UV/ozone off; remove filter socks for 48 hrs |
Shelf Life | ~6 mo room temp; ~1 yr at 50 °F (10 °C); refrigerate for longest life |
Notes | Cannot be overdosed; do not freeze |
Shop Other Sizes
Have a question?


Dr. Tim’s One & Only – Live Nitrifying Bacteria (Saltwater) – 8 oz