Check pH and alkalinity before use. Use 5 g (1 level teaspoon) for every 150 L (40 US gallons) to raise pH by about 0.1 pH units (this will also raise alkalinity by about 0.5 meq/L). For precise dosing, use the Seachem Digital Spoon Scale™. Dissolve in at least 250 mL (one cup) of freshwater, then add to the tank. The pH of natural sea water is 8.25–8.30. In a well established reef system pH adjustment may be necessary biweekly to semiweekly. Dosing requirements will vary, but do not exceed the recommended dose without checking your pH and alkalinity (alkalinity should not exceed 6 meq/L).
If an alkalinity of 6 meq/L has been reached and a pH of at least 8.20 has not been attained or substantial cloudiness that does not clear within 15 minutes is encountered, then the system is not ionically balanced. To restore ionic balance perform a water change or adjust the magnesium and calcium levels to approximately 3:1 Mg:Ca.
DO NOT OVERDOSE: Excess alkalinity may enhance the loss of calcium, magnesium, and strontium. Do not directly mix with any calcium, magnesium, or strontium supplement. Best if calcium & carbonate additives are added on alternate days or at least 30 minutes apart.
Reef Buffer™ Dosing Tables
Standard Dose
Raises alkalinity by approximately 0.5 meq/L
| Water Volume | 1 qt / 1 L | 1 gal / 4 L | 10 gal / 40 L | 50 gal / 200 L |
| Reef Buffer™ Dose (g) | 0.031 g | 0.125 g | 1.25 g | 6.25 g |
| Reef Buffer™ Dose (tsp) | 1/120 tsp | 1/40 tsp | 1/4 tsp | 1 1/4 tsp |
Formula
Want a different result? Here's how to calculate it:
NOTE: MEQ/L IS NOT EQUAL TO dKH
If your test kit gives results in dKH, you will need to convert to meq/L before using this calculator.
50 ppm = 2.8 dKH = 1 meq/L
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Dose in grams =
Your tank volume (gal) x the amount you want to raise your alkalinity (meq/L) x 0.25
Do not increase your alkalinity by more than 1 meq/L in a single day
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Dose in teaspoons =
Your tank volume (gal) x the amount you want to raise your alkalinity (meq/L) x 0.05
Do not increase your alkalinity by more than meq/L in a single day
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