--- product_id: 143108035 title: "Alkalin8.3 Reef Buffer pH Stabilizer, 250ml" brand: "brightwell aquatics" price: "$29.69" currency: USD in_stock: true category: "Brightwell Aquatics" url: https://www.desertcart.us/products/143108035-alkalin8-3-reef-buffer-ph-stabilizer-250ml store_origin: US region: United States of America --- # Boosts alkalinity 7-12 dKH range Precise pH 8.3 stabilization Premium American-made quality Alkalin8.3 Reef Buffer pH Stabilizer, 250ml **Brand:** brightwell aquatics **Price:** $29.69 **Availability:** βœ… In Stock ## Summary > 🌊 Elevate your reef’s vibe with flawless pH harmony! ## Quick Answers - **What is this?** Alkalin8.3 Reef Buffer pH Stabilizer, 250ml by brightwell aquatics - **How much does it cost?** $29.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/143108035-alkalin8-3-reef-buffer-ph-stabilizer-250ml) ## Best For - brightwell aquatics enthusiasts ## Why This Product - Trusted brightwell aquatics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Purity-Driven Formula:** Free from phosphates, silicates & organics for crystal-clear water - β€’ **Automatic pH Regulation:** Maintains perfect 8.3 pH balance for reef stability - β€’ **Superior Alkalinity Boost:** Elevates and stabilizes KH to 7-12 dKH effortlessly - β€’ **Trusted American Craftsmanship:** Scientifically backed, USA-made excellence for thriving aquariums - β€’ **Eliminates Buffering Instabilities:** Fixes issues from poor salt mixes with 50%+ more strength ## Overview Brightwell Aquatics Alkalin8.3 Reef Buffer is a concentrated, scientifically formulated liquid supplement that automatically stabilizes aquarium pH at 8.3 while boosting alkalinity between 7-12 dKH. Free from harmful phosphates and organics, it ensures pure water conditions and eliminates instability caused by inferior salt mixes. Proudly made in the USA, this 250ml solution is ideal for reef enthusiasts seeking consistent, professional-grade aquatic care. ## Description Brightwell Aquatics Alkalin8.3 Concentrated KH Buffer Supplement Experience a new standard in aquarium care with Brightwell Aquatics Alkalin8.3 Concentrated KH Buffer Supplement. This automatic buffer not only raises alkalinity but also precisely adjusts pH to 8.3, ensuring a stable aquatic environment. With over 50% more strength than competitors, it eliminates instability from subpar salt mixes. Free of phosphates, silicate, and organic materials, it promotes water purity. Available in sizes (250ml, 500ml, 2L, 20L) with detailed dosing instructions for basic and advanced users, maintaining alkalinity between 7.5 - 9.5 dKH. Whether setting up a new tank or maintaining an established one, choose Alkalin8.3 for a meticulously crafted solution, ensuring a thriving and stress-free habitat for your marine and reef aquarium. AMERICAN-MADE EXCELLENCE Trust in the quality and excellence of Brightwell Aquatics, an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently strive to deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium. ## Features - AUTOMATIC PH REGULATION – The Alkalin8.3 Concentrated KH Buffer Supplement is a multi-component automatic buffer that elevates alkalinity and adjusts pH to 8.3, providing stability for aquarium environments - ELIMINATES INSTABILITIES – The aquarium buffer effectively eliminates pH and KH instability caused by poor salt mixes and ineffective buffering products. Simultaneously, it raises alkalinity to ensure a consistently stable aquatic environment - CARBONATE SOURCE – This fish tank treatment provides a source of carbonates, a crucial component of aragonite, the mineral secreted by reef-building organisms. It contributes to their skeletal material and is free of phosphates, silicate, and organic materials, promoting water purity - DIRECTIONS – For accurate dosing, utilize a test kit. Add up to 5 ml of the reef primer daily to a 30-gallon aquarium until the desired alkalinity (7 - 12 dKH) is reached. After achieving the desired level, dose as needed for maintenance, whether it be daily or weekly - AMERICAN-MADE EXCELLENCE – Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BUFSQO6 | | ASIN | B00BUFSQO6 | | Allergen Information | Sulphites Free | | Best Sellers Rank | #24,257 in Pet Supplies ( See Top 100 in Pet Supplies ) #210 in Aquarium Water Treatments | | Brand Name | Brightwell Aquatics | | Customer Reviews | 4.5 4.5 out of 5 stars (224) | | Date First Available | April 9, 2013 | | Global Trade Identification Number | 00810086010059 | | Included Components | Alkalin8.3 | | Item Form | Liquid | | Item Type Name | Water Conditoner | | Item Weight | 8 ounces | | Item model number | ALK250 | | Liquid Volume | 8 fluid ounces | | Manufacturer | TopDawg Pet Supply | | Manufacturer | TopDawg Pet Supply | | Manufacturer Part Number | ALK250 | | Model Number | ALK250 | | Product Dimensions | 1 x 1 x 1 inches; 8 ounces | | Target Species | Fish | | UPC | 810086010059 | | Unit Count | 1 Count | ## Product Details - **Brand:** Brightwell Aquatics - **Item Form:** Liquid - **Item Weight:** 8 ounces - **Liquid Volume:** 8 fluid ounces - **Unit Count:** 1 Count ## Images ![Alkalin8.3 Reef Buffer pH Stabilizer, 250ml - Image 1](https://m.media-amazon.com/images/I/617jJgYrCUL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Brightwell Aquatics - Alkalin8.3 Concentrated KH Buffer Supplement - for All Marine Fish and Reef Aquaria - Aquarium Water Treatments, 8.45 fl oz - Seachem Reef Calcium 250ml --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/143108035-alkalin8-3-reef-buffer-ph-stabilizer-250ml](https://www.desertcart.us/products/143108035-alkalin8-3-reef-buffer-ph-stabilizer-250ml) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-14*