[Red Sea] Foundations Complete Pack

Red Sea Reef Foundation Complete Pack — Calcium+, KH/Alkalinity, Magnesium (3 × 250 mL)

Transform Your Tank with the Complete Foundation Trio

Looking for the easiest way to lock in the three parameters that drive coral growth? The Red Sea Reef Foundation Complete Pack is a hobbyist staple at The Coral Boutique — bundling all three of Red Sea's flagship foundation supplements in one ready-to-dose starter pack. If you're new to dosing, transitioning from water changes to active supplementation, or just want to standardize your reef chemistry on one trusted brand, this is the cleanest place to start.

Calcium, alkalinity, and magnesium are the three foundation elements corals consume daily to build their skeletons. In a closed reef aquarium, these elements deplete fast — and once you're past a few small frags, water changes alone can't keep up. The Reef Foundation Complete Pack solves that with three precision-formulated, ready-to-use liquid supplements designed to work together: Foundation A (Calcium+) delivers a calcium and strontium complex in seawater-correct ratios; Foundation B (KH/Alkalinity) provides a high-purity carbonate and bicarbonate buffer to keep dKH rock-solid; and Foundation C (Magnesium) locks in the Mg levels that prevent calcium and alkalinity from precipitating out of solution. Together, they form the backbone of Red Sea's complete Reef Care Program — the same system used by reefers worldwide to grow vibrant, well-colored SPS, LPS, and softies. Each bottle is ready to dose straight from the cap with no mixing, works equally well manually or with a dosing pump, and includes a measuring cup for easy daily use.

Package Contains

• 1 × Red Sea Reef Foundation A — Calcium+ (250 mL)
• 1 × Red Sea Reef Foundation B — KH/Alkalinity (250 mL)
• 1 × Red Sea Reef Foundation C — Magnesium (250 mL)
• Measuring cup for accurate dosing
• Full dosing instructions

Key Benefits

• All three core reef parameters covered in one starter pack
• High-purity, ready-to-use liquid formulas — no mixing required
• Promotes strong coral skeletal growth and vibrant coloration
• Perfect introduction to active dosing for newer reefers
• Compatible with manual dosing or automatic dosing pumps
• Designed to work together without disrupting ionic balance
• Part of Red Sea's complete Reef Care Program

Quick Stats & Dosing Guide Product Name: Red Sea Reef Foundation Complete Pack (Calcium+, KH/Alkalinity, Magnesium) Manufacturer: Red Sea Package Size: 3 × 250 mL (3 × 8.5 fl. oz.) Form: Ready-to-use liquid supplements

Target Parameters:

• Calcium: 410–465 ppm (best coloration around 410–430 ppm)
• Alkalinity: 7.0–8.5 dKH (best coloration around 7.0–7.5 dKH in low-nutrient systems)
• Magnesium: 1,250–1,390 ppm

Dosing Rates:

• Foundation A (Ca): 1 mL raises Ca by 2 ppm in 100 L (25 gallons)
• Foundation B (KH): 1 mL raises alkalinity by ~0.14 dKH in 100 L (25 gallons)
• Foundation C (Mg): 1 mL raises Mg by ~1 ppm in 100 L (25 gallons)

Best Practice: Dose according to measured uptake using Red Sea's Foundation Pro multi-test kit. Dose Foundation A and B at least 30 minutes apart to avoid precipitation. Foundation C (magnesium) can be dosed at any time. For mid-to-large reef systems or high-demand SPS tanks, upgrade to the 500 mL or 1 L sizes.

Why Buy From The Coral Boutique?

At The Coral Boutique, we stock only the supplements and additives we trust on our own systems. The Red Sea Reef Foundation Complete Pack is one of the cleanest, most reliable ways to bring your reef chemistry under control — three trusted bottles, one balanced system, predictable results. Every product on our shelves is tested, vetted, and backed by reefers who actually use it — so you can buy with confidence.