Reef Carbonate, 4 L / 1 fl. gal.

★★★★★ 4.7 118 reviews

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Management number 209695017 Release Date 2026/03/29 List Price $20.36 Model Number 209695017
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Reef Carbonate is a concentrated (4,000 meq/L) optimized blend of carbonate and bicarbonate salts designed to restore and maintain alkalinity in the reef aquarium. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health. To prevent this you must provide carbonates (Reef Carbonate) and calcium (Reef Advantage Calcium or Reef Complete). Used as directed, Reef Carbonate will not deplete calcium, magnesium, or strontium which usually tend to precipitate with increasing alkalinity. Reef alkalinity should be maintained at 4-5 meq/L (11-14 dKH). Alkalinity should not be allowed to fall below 2 meq/L. 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. Each mL contains a minimum of 4 meq of alkalinity.

  • Raises carbonate alkalinity in the reef aquarium
  • A concentrated optimized blend of carbonate and bicarbonate salts designed to restore and maintain alkalinity in the reef aquarium
  • Calcium and carbonates are essential to all coral growth; If either become deficient coral growth will cease followed by rapid decline in coral health
  • Used as directed, it will not deplete magnesium or strontium which usually tend to precipitate with increasing alkalinity
  • 250 milliliters treats 1000 gallons
UPC 000116066907
Item Form Liquid
Brand Name Seachem
Unit Count 1 Count
Item Weight 9 Pounds
Manufacturer Seachem Laboratories, Inc.
Model Number 669
Liquid Volume 4 Liters
Item Type Name aquarium conditioner
Target Species Fish
Allergen Information Allergen-Free
Manufacturer Part Number 669

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