A little less guesswork.
FritzZyme 7 calculator
FritzZyme 7 freshwater live bacteria
Read the product guide and worked examples ↓
Clear amounts. Visible assumptions.
Your calculation, explained
Choose a product and enter the water you’re actually dosing.
- Check the exact product and formulation.
- Use measured water, or make an explicit estimate.
- Review the amount, source and any schedule.
Product guide · edited 28 October 2026
Jump to a section
New or established freshwater system?
FritzZyme 7 has distinct new-system and established-system references. It is not marine FritzZyme 9 or the more concentrated TurboStart 700. Select the stage before calculating.
Worked examples
These illustrations use 100 L of measured water, without a decor deduction. Choose the matching stage or formulation above for your own water volume. They do not select a treatment or establish livestock suitability.
New system
| Stage | Amount or action for 100 L |
|---|---|
| New-system addition | 314.36 mL |
Established system
| Stage | Amount or action for 100 L |
|---|---|
| Established-system addition | 79.25 mL |
Example only. Your calculation above uses your own inputs. Small amounts and powder fractions still need equipment that can measure them reliably.
Before you measure
Remove chlorine/chloramine first and follow UV/skimmer and storage directions. Older manufacturer documents differ from the indexed webpage’s maintenance reference; resolve a bottle mismatch before use.
Product-specific checks from the calculation record
- Remove chlorine/chloramine before adding bacteria, maintain flow/aeration, and stop UV/skimming for at least five days.
- Do not freeze or overheat; follow the expiry and storage instructions. This freshwater formulation is not TurboStart 700 or a marine product.
Does an old PDF override the bottle I have?
Do not silently combine conflicting instructions. Confirm the formulation and applicable label with Fritz before using a mismatched reference.
Sources and next steps
Fritz manufacturer directions →
Source-access note: the manufacturer site blocked direct retrieval during this edit. Indexed manufacturer text and the existing checked calculation record were used; a fresh live-page verification is not claimed.