Fishless Fuel

We recommend adding the Fishless Fuel first so you can ensure the correct ammonia level, then add FritzZyme nitrifying bacteria. Nitrifying bacteria need ammonia to survive, so if you add FritzZyme first, make sure to add Fishless Fuel within 24 hours of adding bacteria.

The nitrite conversion phase occurs slightly slower than the ammonia conversion phase of the cycle. If the nitrite level can not be reduced to a safe level with a water change, you'll need to add more ammonia within 24 hours of it reaching zero to prevent dieoff of bacteria. Use a lower concentration (1ppm or less) to reduce another backup during the nitrite phase.

If you aren't ready to add fish within 3 days or 72 hours of your cycle completing, we recommend you re-dose with Fishless Fuel to prevent bacterial dieoff.

No. Fishless Fuel must be diluted before it can be read accurately with a test kit. Adding it full strength (directly from the bottle) to a small sample for a test kit will interfere with the chemistry of the reagents and cause the test to be inaccurate.