Seachem Marine Buffer 500g

• Raises and maintains pH at 8.3 in all saltwater aquariums
• Will not raise pH above 8.3 even if inadvertently 
• Can be used safely in reef tanks
• Contains borate for added stability
• Contains magnesium to alleviate precipitation effects

Dosage 

Add 5 g (1 level teaspoon) for each 80 L (20 US gallons). Dissolve in at least one cup of freshwater. This dose will also raise alkalinity by about 1 meq/L. Add daily until pH stabilizes at 8.3. This will take from a day to a week, depending on original pH and alkalinity. Thereafter, use biweekly or monthly to maintain a pH of 8.3.