Seachem Reef Carbonate – 500ml

Reef Carbonate is a concentrated 4000 meqL 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 35 meqL 814 dKH. Alkalinity should not be allowed to fall below 2 meqL.


BEGINNER Use 1 capful 5 mL per 80 L 20 gallons twice a week. Best if diluted into a cup of freshwater then added. Check alkalinity every 2 weeks and adjust dose or frequency accordingly.

ADVANCED Check alkalinity then follow dosing regimen above until alkalinity is adjusted to 45 meqL. Each dose will raise alkalinity by about 0.25 meqL. Size or frequency of dose can be adjusted but do not exceed 1 meqL per day. Thereafter use as required to maintain alkalinity.

EXPERT After determining the alkalinity consumption rate set up a continuous drip system. Use the following formula to determine how much to add to your topoff water mva mmL of product to add to top off water vvolume of tank in gallons aamount to raise alkalinity in meqL. For example if you want to raise alkalinity by 1 meqL in a 50 gallon tank then you would add 50×150 mL into the topoff water.

HINTS Best to pour in gradually near strong water movement. Do not add to a sump or other area of slow water exchange. Use MultiTest Marine pH andamp Alkalinity to measure total alkalinity or Reef Status Magnesium Carbonate andamp Borate to measure carbonate alkalinity.

DO NOT OVERDOSE Excess alkalinity may enhance the loss of calcium magnesium and strontium. Do not directly mix with any calcium magnesium

  • Seachem Reef Carbonate 500ml