FritzZyme 7 Freshwater 946ml

For new systems, dose 4 oz (119 mL / ½ cup) per 10 US gallons (38 L). For established systems, use 1 oz (30 mL) per 10 US gallons (38 L). For a large livestock system or systems with heavy bioload, new system dosage may be safely increased up to 10x.

Need help? Try our FritzZyme user guide!

• For best results, maintain ideal water parameters noted below and use FritzZyme® 7 before the expiration date on the package
• All chlorine and chloramines must be removed from water before adding FritzZyme® 7
• Nitrifying bacteria require ammonia and nitrite to survive; in new systems introduce livestock or another ammonia source like Fishless Fuel to start cycling
• Maintain adequate water flow or aeration
• Discontinue use of skimmer and UV sterilizers for at least 5 days after application
• No contraindications: can be used with all of our other products and meds
• Safe for use with all species, including plants and invertebrates
• Safe to add directly into a tank with livestock present
• Will not color or cloud aquarium water
• Variations of odor and color between bottles is normal, a strong sulfur smell does not mean the bacteria are dead
• Do not freeze or overheat. Store in a cool, dark place
• Overdosed? Live nitrifying bacteria are very safe even if overdosed. Observe for any distress, perform small water changes if necessary

Ideal parameters for FritzZyme® 7 nitrifying bacteria:
Temperature: 77-86 F (25-30 C)
pH: 7.3-8.0; nitrification is completely inhibited below pH 6.0
Salinity: 0 - 6 ppt (1.000 to 1.0045 sg); active up to 15 ppt (1.011 sg)
Alkalinity (KH): minimum 4.5 dKH or 80.5 ppm KH
Phosphate: above 0 ppm