2-Part Solutions for Aquariums

2 part calcium and alkalinity is sold in separate bottles because the major elements would react with one another. Almost every marine aquarist starts with two-part solution, as it is the easiest way to maintain healthy tank levels. Every tank is different. Test daily in the beginning to see how much calcium and alkalinity are used. Then, dose each bottle, at least 15 minutes apart, per manufacturer’s directions, usually in even amounts. Use our Calcium and Alkalinity calculators to do the math. Once the levels are balanced, test weekly to ensure the levels are stable. As corals grow, calcium and alkalinity consumption increases.

Do you have trouble maintaining calcium and alkalinity in a reef tank? Try adding an automatic dosing system, to supplement two part solution throughout the day.
26 Results
Kent Marine Tech CB Part B 128 oz.

Kent Marine Tech CB Part B 128 oz.

Kent Marine Tech CB Part A 128 oz.

Kent Marine Tech CB Part A 128 oz.

Kent Marine Nano Reef Parts A & B - 8oz each

Kent Marine Nano Reef Parts A & B - 8oz each

Kent Marine Tech CB Part B 64 oz.

Kent Marine Tech CB Part B 64 oz.

Kent Marine Tech CB Part A 64 oz.

Kent Marine Tech CB Part A 64 oz.

CaribSea Coral Up B Coral Growth Supplement (Alkalinity) - 32 oz

CaribSea Coral Up B Coral Growth Supplement (Alkalinity) - 32 oz

ATI Essentials Pro (2x2L) and Simplicity Dosing Container Bundle

ATI Essentials Pro (2x2L) and Simplicity Dosing Container Bundle

Coral Essentials Calcium + Trace Supplement - 500 ml

Coral Essentials Calcium + Trace Supplement - 500 ml

Coral Essentials Carbonate + Trace Supplement - 500 ml

Coral Essentials Carbonate + Trace Supplement - 500 ml

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