Red Sea Reef Foundation Complete Supplement Pack – Calcium, Alkalinity & Magnesium – 3 x 250 mL
$34.99
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Standard U.S. shipping: $12.99; free standard shipping on eligible qualifying orders of $100 or more. Specialty shipments are charged separately.
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Standard/Economy: $12.99; free standard shipping on eligible qualifying orders of $100 or more.
Most in-stock orders process in 1–3 business days. Estimated standard transit is 5–12 business days after dispatch. Backorders, preorders, and special orders follow their stated lead times. Dates are estimates, and separate shipments may have separate charges.
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Red Sea Reef Foundation Complete Supplement Pack – 3 x 250 mL
Build and maintain the chemical foundation of a thriving reef aquarium with the Red Sea Reef Foundation Complete Supplement Pack.
This complete three-part supplementation system provides calcium, alkalinity, and magnesium, the major foundation elements required by corals for skeletal development and healthy growth.
The pack includes three 250 mL liquid supplements, making it an easy way to begin or maintain a balanced Red Sea Reef Foundation dosing program.
Complete Three-Part Reef Foundation System
Foundation A – Calcium+
Provides calcium along with strontium and barium in ratios designed around the composition of coral skeleton.
Concentration: 1 mL per 25 gallons raises calcium by approximately 2 ppm.
Foundation B – KH/Alkalinity
Provides carbonates and buffers to maintain alkalinity and support stable reef aquarium water chemistry.
Concentration: 1 mL per 25 gallons raises alkalinity by approximately 0.1 dKH.
Foundation C – Magnesium
Provides magnesium to help maintain balanced reef water chemistry and support the proper availability of calcium and alkalinity.
Concentration: 1 mL per 25 gallons raises magnesium by approximately 1 ppm.
What's Included
1 x 250 mL Foundation A Calcium+
1 x 250 mL Foundation B KH/Alkalinity
1 x 250 mL Foundation C Magnesium
Why Calcium, Alkalinity & Magnesium Matter
Growing corals continuously consume calcium, carbonates, magnesium, and other elements from aquarium water.
Maintaining these foundation parameters at stable, balanced levels helps support:
Coral skeletal growth and calcification
Stable alkalinity and water chemistry
Healthy SPS and LPS coral growth
Coralline algae growth
Consistent reef aquarium conditions
Balanced supplementation based on your aquarium's actual consumption
Designed for Measured Reef Dosing
The Red Sea Reef Foundation system allows calcium, alkalinity, and magnesium to be monitored and adjusted individually based on the needs of your aquarium.
For best results, regularly test your aquarium's calcium, alkalinity, and magnesium levels and dose according to measured consumption. Avoid dosing supplements simply to reach a target without testing.
Pair with the Red Sea Reef Foundation Pro Multi Test Kit for accurate monitoring of all three foundation parameters.
Ideal For
Reef aquariums
Mixed reef systems
SPS and LPS coral aquariums
Coral grow-out systems
Aquariums with increasing calcium and alkalinity demand
Manual supplementation
Multi-channel dosing systems
Red Sea Reef Care Program users
Why Buy From Infinity and Beyond Aquatics?
Infinity and Beyond Aquatics offers trusted reef aquarium supplements, testing products, dosing equipment, filtration, and coral-care essentials for hobbyists of all experience levels.
Need help choosing supplements, test kits, or dosing equipment for your reef aquarium? Contact us through our website and we'll help you find the right solution for your system.