For best results, de*nitrate™ should be placed to assure the flow of water through it, such as in a canister filter, chemical filtration module, or box filter. Flow rate should not exceed 200 L (50 US gallons) per hour. If higher flow rates are unavoidable, use Matrix™ or Pond Matrix™. It is best to rinse off dust before use. Once de*nitrate™ has been in use for several days, nitrate concentrations should start to fall and level off gradually at a concentration of about 4–5 mg/L as nitrate. As long as nitrate concentrations remain under control, the product is not exhausted. Each 500 mL of de*nitrate™ treats about 100–200 L (25–50 US gallons), depending on initial nitrate concentration and the current biological load. Enough should be used to remove nitrate at a rate at least as fast as the rate of formation. If very high nitrates are initially present, they should be brought down to less than 20 mg/L with water changes.
de*nitrate™ Dosing Tables
de*nitrate™ absolutely must be used in a flow rate of 50 GPH or less in order to be effective at removing nitrate. For higher flow rates, Seachem® recommends Matrix™ or Pond Matrix™.
| Water Volume | 1 gal / 4 L | 10 gal / 20 L | 20 gal / 40 L | 60 gal / 200 L |
| de*nitrate™ Dose (mL) | 20 mL | 200 mL | 400 mL | 1200 mL |
| de*nitrate™ Dose (Imperial) | 4 tsp | 4/5 cup | 1 2/5 cups |
4 1/5 cups |
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