Seachem Reef Carbonate

2 reviews

Seachem Reef Carbonate features both calcium and carbonates for the optimum development of corals in your marine reef aquarium - helping to create a mineral rich water chemistry to supply your corals with the right building materials to grow into something truly beautiful.


  • Reef Carbonate 100ml
    code: 20442 In Stock (Only 4 left!)
  • Reef Carbonate 500ml
    code: Sea663 Out of stock

Product Information

Seachem Reef Carbonate is a blend of carbonate and bicarbonate which restores and maintains the alkalinity levels of your reef tank perfectly. Reef Carbonate is a concentrated (4,000 meq/L) blend of carbonate and bicarbonate. Both calcium and carbonates are essential to coral growth and without them the health of your corals will suffer. The corals will stop growing and a decline in their health will follow. Reef Carbonate will not lower calcium, magnesium, or strontium levels, so you can be confident of the best results. Reef alkalinity should be maintained at 3-5 meq/L (8-14 dKH). Alkalinity should not be allowed to fall below 2 meq/L. The blend of salts results in Reef Carbonate make for a pK of roughly 9.0 in saltwater.

Key Features:

  • Blend of carbonate and bicarbonate
  • Maintains alkalinity levels
  • Will not lower calcium, magnesium, or strontium levels


Use 1 capful (5 mL) per 80 L twice a week. Each dose will raise alkalinity by about 0.25 meq/L.

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