FRITZ FritzZyme 7 (Freshwater Nitrifying Bacteria) - 8oz(237ml)
- Prevents “new tank syndrome”
- Allows for immediate introduction of fish
- Naturally eliminates toxic ammonia and nitrite
- Great for use after maintenance
- No need for refrigeration
Overview
FritzZyme® 7 contains live freshwater-specific strains of live nitrifying bacteria proven to reduce fish loss due to toxic levels of ammonia and nitrite. Nitrifying bacteria can take weeks to naturally establish colonies in new aquariums while ammonia and nitrite can reach lethal levels in only a few days. FritzZyme 7 provides bacteria proven to rapidly seed biofilters, greatly reducing the natural cycle time allowing for safe, faster addition of livestock.
Why add nitrifying bacteria to your aquarium?
It’s all about the nitrogen cycle and how long it takes.
Cycling with FritzZyme 7*
FritzZyme 7 Live Nitrifying Bacteria provides the species of freshwater-specific bacteria proven to rapidly seed biofilters. Since the bio-filter is established immediately, ammonia and nitrite remain at safe levels during the nitrogen cycle.**
Cycling without added bacteria
Without an established biofilter, ammonia and nitrite levels can reach toxic levels in only a few days while the nitrogen cycle may take up to several weeks.
*Cycle time can vary depending on amount of livestock, feeding and other factors. Graphs are for illustrative purposes only. **Nitrate is removed from aquariums by regular water changes.
Directions
Remove chlorine and chloramines with a water conditioner prior to adding FritzZyme 7.
Discontinue use of UV sterilizers (if present) prior to and 4 days after each application.
Shake well, add directly to aquarium
Add livestock within 24 hours, do not overstock or overfeed
Monitor ammonia and nitrite levels daily
Dose for new systems
Add 4 oz (119 mL / ½ cup) per 10 US gallons (38 L)
Repeat dosing is not required. To decrease cycling time or for larger stock levels, dose may be increased up to 10x or repeated as desired. Consult the Ideal Parameters table if cycling time is not progressing as expected.
Dose for maintenance
Add 1 oz (30 mL) per 10 US gallons (38 L)
Maintenance dose may be applied as needed, such as when adding new livestock, replacing filter media, or after using medications.
Real live bacteria
Only true nitrifying bacteria can cycle an aquarium. FritzZyme 7 contains live, aquarium-proven strains—carefully buffered for stability so they’re alive and effective when you add them.
Trusted by professionals
From beginners to world-class public aquariums, aquarists rely on FritzZyme nitrifying bacteria to keep aquatic life safe and thriving.
Proven over 40 years
Fritz was the first to commercially produce live nitrifying bacteria for aquariums—and has been leading the way ever since with continuous innovation and quality.
