FRITZZYME #7 FRESHWATER NITRIFYING BACTERIA contains live, active. non-pathogenic, non-toxic Nitrosomonas and Nitrobacter nitrifying bacteria. Proven to be the best product available for ammonia & nitrite reduction by laboratory testing performed at the University of California, FRITZZYME #7 begins rapidly converting ammonia & nitrite to non-toxic nitrate when added.

Always add FRITZZYME #7

• To new tanks
• When adding new livestock
• After any rigourous cleaning
• Changing Gravel
• After changing filter cartridges
• After medicating
• Whenever ammonia/nitrite imbalances occur

For best results, first add FRITZ GUARD water conditioner to coat bio media and aid bacteria in attachment. Add one cup of FRITZ-ZYME #7 per 20 gallons.