--- product_id: 1627529 title: "Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums" brand: "red sea" price: "€ 70.64" currency: EUR in_stock: true reviews_count: 9 url: https://www.desertcart.be/products/1627529-red-sea-reef-foundation-b-alkalinity-kh-supplement-500ml-boosts store_origin: BE region: Belgium --- # Supports strong coral skeletons 500ml precision dosing Boosts carbonate alkalinity (KH) Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums **Brand:** red sea **Price:** € 70.64 **Availability:** ✅ In Stock ## Summary > 🌊 Elevate your reef game with every drop! ## Quick Answers - **What is this?** Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums by red sea - **How much does it cost?** € 70.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/1627529-red-sea-reef-foundation-b-alkalinity-kh-supplement-500ml-boosts) ## 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 - • **Trusted by Thousands:** 4.8-star rating from 113 reef-obsessed customers - • **Coral Strength Amplifier:** Enhances carbonate levels to build resilient coral skeletons - • **Effortless Aquarium Care:** Simple, user-friendly formula for hassle-free dosing - • **Premium Quality from Israel:** Manufactured with trusted expertise for reef enthusiasts - • **Perfect for Marine Ecosystems:** Optimized for reef & marine aquarium water chemistry ## Overview Red Sea Reef Foundation B Alkalinity Supplement (500ml) precisely boosts carbonate hardness (KH) to strengthen coral skeletons in reef and marine aquariums. Trusted by aquarists worldwide, this easy-to-use formula is manufactured in Israel and highly rated for maintaining optimal water chemistry essential for vibrant, healthy coral growth. ## Description Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons. All of these elements need to be available in balanced proportions for coral health and growth. Red Sea’s KH/ALKALINITY is a complex of Carbonate and other buffers present in seawater that maintain proper Alkalinity and pH. Foundation B - 1000 ml Foundation B - 500 ml Foundation B - 1000 ml Foundation B - 5 L Foundation B - 1kg Powder 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 ## Features - This product is easy to use - This product adds a great Value - This product is Manufactured in Israel ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B004E2DW78 | | Best Sellers Rank | #869 in Aquarium Water Treatments | | Date First Available | August 18, 2004 | | Item Model Number | 23173 | | Manufacturer | Red Sea | | Product Dimensions | 3.15 x 7.87 x 3.15 inches; 1 pounds | ## Product Details - **Brand:** Red Sea - **Item Form:** Stick - **Item Weight:** 16 ounces - **Liquid Volume:** 500 ml - **Number of Packs:** 1 ## Images ![Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Image 1](https://m.media-amazon.com/images/I/81tqlVcRItL.jpg) ![Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Image 2](https://m.media-amazon.com/images/I/61DbhrwHHaL.jpg) ![Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Image 3](https://m.media-amazon.com/images/I/81wICs0grEL.jpg) ![Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Image 4](https://m.media-amazon.com/images/I/51kI5BWn8yL.jpg) ![Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Image 5](https://m.media-amazon.com/images/I/71plVaLV2mL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product from trusted company *by on Reviewed in the United States April 17, 2018* Works good as a 2-in-1 alkalinity supplement for reef tanks. I didn't want the hassle of buying separate carbonate and bicarbonate products and then premixing them. This liquid product is easy to use and disperses quickly in the tank.I originally bought the Foundation A+B+C pack, but my reef depletes my alk much more quickly than my Mg and Ca so I bought the big Alk bottle this time. ### ⭐⭐⭐⭐⭐ Loving Red Sea Foundation A & B *by on Reviewed in the United States November 2, 2014* Two months ago, my local store aquarium expert had recommended that stop dosing with various Kent products and instead does my reef aquarium with Red Sea Foundation A and Foundation B. His recommendation was that I alternate the dosing daily (Foundation A one day; Foundation B the next).After doing this for about 1 month, the aquarium expert asked me how things were going and way I thought of the Red Sea foundation products. 30 days in, I was still a bit skeptical about this dosing regimen. Because of the alternative day dosing schedule, I was doing a lot of water testing - primarily measuring KH and Calcium every other day and adjusting my dosage based on the testing. ( you still complete your standard water tests as well )After 30 days, I wasn't seeing much of a difference in my reef tank.Two months into dosing my tank with Red Sea Foundation A & B, my corals have literally exploded in growth and energy.You end up adjusting and managing KH and Calcium with your dosing of Red Sea Foundation A & B. Both counteract each other, so high KH would reduce the Calcium and vice versa. Once you get the balance, you dose to maintaini it.I have to say that my corals are doing excellent. Each and every one, both LPS and SPS are doing great.Prior to this, I was dosing a number of Kent products. Using Red Sea Foundation A&B, things are much more simplified.You don't have to alternate doses daily as I do, but this works for me.I'd recommend Foundation A & B dosing. With a little patience, you will be happy with the end results. ### ⭐⭐⭐⭐⭐ It's a must for a reef tank *by on Reviewed in the United States February 17, 2022* It work well in a reef tank ## Frequently Bought Together - Red Sea Reef Foundation B Alkalinity (KH) Supplement, 500ml - Boosts Carbonate Levels for Strong Coral Skeletons in Reef & Marine Aquariums - Red Sea Reef Foundation A (Ca/Sr) Supplement, 500ml - Calcium & Strontium Additive for Healthy Coral Growth in Marine & Reef Aquariums - Red Sea Reef Foundation C Magnesium (Mg) Supplement, 500ml - 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.be/products/1627529-red-sea-reef-foundation-b-alkalinity-kh-supplement-500ml-boosts](https://www.desertcart.be/products/1627529-red-sea-reef-foundation-b-alkalinity-kh-supplement-500ml-boosts) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-10-01*