To increase tannins by 1 ppm: Add 5 mL (1 tsp) per One U.S. Gallon (3.8 L) or 6 drops per cup (236 mL). Add to new water during water changes. Avoid overdosing.
- For best results, add Fritz Dark Water to a high flow area of the aquarium
- No equipment restrictions necessary
- No contraindications: can be used with all of our other products and meds
- Tannic acid can lower pH, monitor pH with a test kit during use and limit any change to 0.2 pH units per day if livestock are present
- Overdosed? Observe livestock for distress, perform small water changes if needed
