--- product_id: 263417474 title: "Kh/Alkalinity (Foundation B) - 500ml" brand: "red sea" price: "€ 46.96" currency: EUR in_stock: true reviews_count: 5 category: "Red Sea" url: https://www.desertcart.at/products/263417474-kh-alkalinity-foundation-b-500ml store_origin: AT region: Austria --- # Liquid formula for quick dispersion Precise dosing with measuring cup Balanced alkalinity boost Kh/Alkalinity (Foundation B) - 500ml **Brand:** red sea **Price:** € 46.96 **Availability:** ✅ In Stock ## Summary > 🌊 Elevate your reef’s foundation with precision and ease! ## Quick Answers - **What is this?** Kh/Alkalinity (Foundation B) - 500ml by red sea - **How much does it cost?** € 46.96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/263417474-kh-alkalinity-foundation-b-500ml) ## 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 Reef Science:** Part of Red Sea’s complete Reef Care program, backed by 4.8-star reviews. - • **Effortless Daily Dosing:** Includes a measuring cup for hassle-free, automatic supplementation. - • **Cost-Effective Reef Care:** Concentrated 500ml bottle delivers long-lasting value for thriving aquariums. - • **Rapid Alkalinity Stabilization:** Liquid formula disperses quickly to maintain stable pH and reef health. - • **Perfectly Balanced Coral Foundation:** Supports optimal coral skeleton growth with precise carbonate and buffer complex. ## Overview Red Sea KH/Alkalinity Foundation B is a 500ml liquid supplement designed to maintain balanced alkalinity and pH in reef aquariums. It delivers essential carbonate and buffer elements critical for coral skeleton formation, featuring a precise dosing system with a measuring cup for effortless daily use. Trusted by reef enthusiasts, this cost-effective formula ensures rapid dispersion and stable water chemistry, supporting vibrant coral health and growth. ## Description KH/ALKALINITY FOUNDATION® B Carbonate & buffer complex for balanced formation of Coral Skeleton KH 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, and is part of Red Sea’s complete Reef Care program. Concentration: Liquid supplement: 1ml will raise the Alk level of 100 liters (25 gal) by 0.036 meq/l (0.1dKH) Powder supplement: 1g will raise the Alk level of 100 liters (25 gal) 0.12 meq/l (0.33dKH) 1 kg will make 10L of stock solution. Review: Test regularly - Increase the KH in my tank Review: Good product from trusted company - 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. ## Features - Add this liquid supplement to your aquarium daily to form the basic foundation of coral skeletons - Easy to use with automatic dosing - Balanced proportions for coral health and growth - Cost Effective - Include a measuring cup for easy dosing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004E2DW78 | | Allergen Information | BPA-Free | | Best Sellers Rank | #19,189 in Pet Supplies ( See Top 100 in Pet Supplies ) #153 in Fish Medication & Health Supplies | | Brand | Red Sea | | Brand Name | Red Sea | | Country of Publication | USA | | Customer Reviews | 4.8 out of 5 stars 112 Reviews | | Global Trade Identification Number | 00730773220236 | | Item Form | Liquid | | Item Type Name | Red Sea KH/ALKALINITY (FOUNDATION B) - 500ML | | Item Weight | 1 Pounds | | Item form | Liquid | | Item weight | 1 Pounds | | Liquid Volume | 500 Milliliters | | Liquid volume | 500 Milliliters | | Manufacturer | TopDawg Pet Supply | | Manufacturer Part Number | 306037 | | Model Number | 23173 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 730773220236 | | Unit Count | 1 Count | | Unit count | 1 Count | ## Product Details - **Brand:** Red Sea - **Item form:** Liquid - **Item weight:** 454 g - **Liquid volume:** 500 Milliliters - **Manufacturer:** TopDawg Pet Supply ## Images ![Kh/Alkalinity (Foundation B) - 500ml - Image 1](https://m.media-amazon.com/images/I/81tqlVcRItL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Test regularly *by P***R on 24 May 2024* Increase the KH in my tank ### ⭐⭐⭐⭐⭐ Good product from trusted company *by A***. on 17 April 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 P***T on 2 November 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. ## 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.at/products/263417474-kh-alkalinity-foundation-b-500ml](https://www.desertcart.at/products/263417474-kh-alkalinity-foundation-b-500ml) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-10*