--- product_id: 60640961 title: "Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums" brand: "red sea" price: "€ 372.46" currency: EUR in_stock: true reviews_count: 2 category: "Red Sea" url: https://www.desertcart.es/products/60640961-red-sea-reef-foundation-a-ca-sr-supplement-5-l store_origin: ES region: Spain --- # Optimized for marine & reef aquariums 5L liquid formula for easy dosing Balanced Calcium & Strontium ratio Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums **Brand:** red sea **Price:** € 372.46 **Availability:** ✅ In Stock ## Summary > 🌊 Elevate your reef game with the ultimate calcium & strontium boost! ## Quick Answers - **What is this?** Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums by red sea - **How much does it cost?** € 372.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/60640961-red-sea-reef-foundation-a-ca-sr-supplement-5-l) ## Best For - red sea enthusiasts ## Why This Product - Trusted red sea brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Mineral Power:** Calcium and Strontium blend supports robust coral skeleton growth - • **Marine-Grade Purity:** Formulated free of common allergens and impurities for a healthy aquatic environment - • **Trusted Reef Science:** Backed by Red Sea’s proven reef foundation system for consistent results - • **Long-Lasting Freshness:** Fresh 5L supply with extended shelf life—no rush, just reef success - • **Effortless Coral Vitality:** Liquid form ensures precise, mess-free dosing for thriving reefs ## Overview Red Sea Reef Foundation A (Ca/Sr) Supplement is a 5-liter liquid additive designed to deliver a precise balance of calcium and strontium, essential for healthy coral growth in marine and reef aquariums. Trusted by reef enthusiasts, this easy-to-use formula supports vibrant, strong coral skeletons while maintaining optimal water chemistry. Packaged for freshness and purity, it’s the go-to choice for professional and hobbyist aquarists aiming for thriving reef ecosystems. ## Description Become a Reefkeeper! Dive deep into the captivating world of saltwater aquariums using our Industry Leading Products and Solutions. Red Sea has over 30 years of Multidisciplinary knowledge and experience resulting in numerous innovations to the reefing world Become a Reefkeeper! Dive deep into the captivating world of saltwater aquariums using our Industry Leading Products and Solutions. Red Sea has over 30 years of Multidisciplinary knowledge and experience resulting in numerous innovations to the reefing world Best in Class Visit the Store Best in Class Visit the Store Review: Received fresh product - I like Red Sea products and I was happy that this is fresh and does not expire for a couple years! Review: Great product - I use the foundation supplements for my mixed reef with good results. I prefer this over the foundation A powder since it’s about the same cost per amount of supplement and it’s much easier to use. There is a tingle of brown in the fluid which is normal per Red Sea support. ## Features - Quality And Performance Driven Products For Your Pet - Tested For Safety And Health - Provide A Better Quality Of Living For Your Pet With Red Sea - Package Dimensions: 3.93700787401575" L X 7.8740157480315" W X 11.4173228346457" H ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B011UMNJY0 | | Allergen Information | Buckwheat Free | | Best Sellers Rank | #100,746 in Pet Supplies ( See Top 100 in Pet Supplies ) #899 in Aquarium Water Treatments | | Brand | Red Sea | | Brand Name | Red Sea | | Customer Reviews | 4.8 out of 5 stars 29 Reviews | | Global Trade Identification Number | 00730773220151 | | Item Form | Liquid | | Item Type Name | Aquarium Supplies | | Item Weight | 1 Pounds | | Liquid Volume | 5 Liters | | Manufacturer | Pro-Motion Distributing - Direct | | Manufacturer Part Number | 63322015 | | Model Number | 63322015 | | Pet Type | Fish | | Target Species | Fish | | UPC | 730773220151 | | Unit Count | 1 Pack | ## Product Details - **Brand:** Red Sea - **Item Form:** Liquid - **Item Weight:** 16 ounces - **Liquid Volume:** 5 Liters - **Manufacturer:** Pro-Motion Distributing - Direct ## Images ![Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Image 1](https://m.media-amazon.com/images/I/71jlygSjvML.jpg) ![Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Image 2](https://m.media-amazon.com/images/I/51FUuu6hZEL.jpg) ![Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Image 3](https://m.media-amazon.com/images/I/81wICs0grEL.jpg) ![Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Image 4](https://m.media-amazon.com/images/I/61U8l1oSlrL.jpg) ![Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Image 5](https://m.media-amazon.com/images/I/719ro4kU1pL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Received fresh product *by S***G on April 8, 2023* I like Red Sea products and I was happy that this is fresh and does not expire for a couple years! ### ⭐⭐⭐⭐⭐ Great product *by A***N on July 3, 2019* I use the foundation supplements for my mixed reef with good results. I prefer this over the foundation A powder since it’s about the same cost per amount of supplement and it’s much easier to use. There is a tingle of brown in the fluid which is normal per Red Sea support. ## Frequently Bought Together - Red Sea Reef Foundation A (Ca/Sr) Supplement, 5 L - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Red Sea Reef Foundation B Alkalinity (KH) Supplement, 5 L - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Red Sea Reef Foundation C Magnesium (Mg) Supplement, 5 L - Maintains Magnesium Balance for Healthy Corals in Marine & Reef Aquariums --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.es/products/60640961-red-sea-reef-foundation-a-ca-sr-supplement-5-l](https://www.desertcart.es/products/60640961-red-sea-reef-foundation-a-ca-sr-supplement-5-l) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-06-01*