--- product_id: 9143558 title: "Alkaline Buffer, 300 g / 10.5 oz" brand: "seachem" price: "109.17 DT" currency: TND in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.tn/products/9143558-alkaline-buffer-300-g-10-5-oz store_origin: TN region: Tunisia --- # Non-phosphate, algae-safe Treats 500 US gallons Buffers pH 7.2-8.5 Alkaline Buffer, 300 g / 10.5 oz **Brand:** seachem **Price:** 109.17 DT **Availability:** ✅ In Stock ## Summary > 🌊 Elevate your aquarium’s vibe—stability and clarity in every drop! ## Quick Answers - **What is this?** Alkaline Buffer, 300 g / 10.5 oz by seachem - **How much does it cost?** 109.17 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/9143558-alkaline-buffer-300-g-10-5-oz) ## Best For - seachem enthusiasts ## Why This Product - Trusted seachem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Gentle:** Enhances freshwater habitats with essential minerals like sodium, potassium, and magnesium. - • **Massive Coverage:** 300g treats up to 500 gallons, maximizing value and minimizing hassle. - • **Algae-Free Formula:** Non-phosphate buffer prevents algae blooms and water cloudiness. - • **Aquarium-Optimized:** Designed specifically for planted tanks and hard water environments. - • **Precision pH Control:** Maintain stable pH between 7.2 and 8.5 for thriving aquatic life. ## Overview Seachem’s Alkaline Buffer is a 300g non-phosphate formula engineered to raise and stabilize pH and alkalinity in freshwater aquariums. Ideal for planted tanks and hard water, it treats up to 500 gallons, preventing algae and cloudiness while supporting a healthy aquatic environment with essential minerals. ## Description Alkaline Buffer is a non-phosphate buffer to raise pH and buffer with Acid Buffer. These buffers are designed for the planted aquarium or for very hard water where phosphate buffers may pose an algae or cloudiness problem. Alkaline Buffer raises pH and buffers between 7.2 and 8.5. It is gentle, safe, and enhances the freshwater environment. Contains sodium, potassium, magnesium, and other bicarbonate salts. Review: good product - I use this all the time, although the smell is not the best its one of the products i will always go back to. price for this is worth it and goes a long way Review: Best if used w/acid buffer - Great for raising pH and KH - My tap water has very low KH, so I needed something to raise it to keep my tank from major pH fluctuations, such as from my new driftwood. If you are trying to hit a specific pH, you would do well to buy the Seachem acid buffer with this alkaline buffer and mix them with a specific ratio per the instructions on the container. I had just gotten a nice large piece of wood for my tank, and didn't have the time/space to soak it separately, so I put it directly in my tank. To keep the initial wood rot and tannins from lowering my pH significantly, I got this alkaline buffer, in addition to some activated carbon. I added just enough to raise my KH to about 4 degrees and the pH to about 7.4, which is where it was before the tannins started lowering it. pH has now stabilized to around 7.3-7.4. With tank cleaning/water changes, more buffer will eventually need to be added to keep things stable. It seems to be a decent product, and was very cheap, so I'm happy. ## Features - Raises Ph. And Increases Alkalinity (KHz) - A Non-Phosphate Buffer To Raise Ph. And Alkalinity And Buffer With Acid Buffer - Designed for the planted aquarium or for very hard water where phosphate buffers may pose algae or cloudiness problems - Gentle, Safe, And Enhances The Freshwater Environment - 300 Grams Treats 500 Us Gallons ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002A5VYI | | ASIN | B0002A5VYI | | Age Range Description | all stages | | Best Sellers Rank | #19,320 in Pet Supplies ( See Top 100 in Pet Supplies ) #172 in Aquarium Water Treatments | | Brand Name | Seachem | | Color | white | | Customer Reviews | 4.6 4.6 out of 5 stars (1,410) | | Date First Available | June 15, 2004 | | Date First Available | June 15, 2004 | | Department | Unisex-Adult | | Department | Unisex-Adult | | Directions | To raise pH and alkalinity, use Alkaline Buffer with Acid Buffer in planted aquariums or very hard water to prevent algae or cloudiness problems. | | Included Components | all | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 2.44 x 2.44 x 4.81 inches | | Item Package Dimensions L x W x H | 4.88 x 2.24 x 2.17 inches | | Item Weight | 11.2 Ounces | | Item model number | 001124 | | Item model number | 001124 | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer | Seachem Laboratories, Inc. | | Material | Plastic | | Model Name | Alkaline Buffer, 300 g / 10.5 oz | | Number of Items | 1 | | Product Dimensions | 2.44 x 2.44 x 4.81 inches; 11.2 ounces | | Size | 300 g / 10.6 oz | | Specific Uses for Product | Habitat | | Target Audience Keyword | fish | ## Product Details - **Brand:** Seachem - **Item Form:** Powder - **Item Weight:** 11.2 Ounces - **Liquid Volume:** 300 Milliliters - **Manufacturer:** Seachem Laboratories, Inc. ## Images ![Alkaline Buffer, 300 g / 10.5 oz - Image 1](https://m.media-amazon.com/images/I/61Ae68LqpYL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ good product *by S***H on December 14, 2025* I use this all the time, although the smell is not the best its one of the products i will always go back to. price for this is worth it and goes a long way ### ⭐⭐⭐⭐⭐ Best if used w/acid buffer - Great for raising pH and KH *by C***K on December 17, 2023* My tap water has very low KH, so I needed something to raise it to keep my tank from major pH fluctuations, such as from my new driftwood. If you are trying to hit a specific pH, you would do well to buy the Seachem acid buffer with this alkaline buffer and mix them with a specific ratio per the instructions on the container. I had just gotten a nice large piece of wood for my tank, and didn't have the time/space to soak it separately, so I put it directly in my tank. To keep the initial wood rot and tannins from lowering my pH significantly, I got this alkaline buffer, in addition to some activated carbon. I added just enough to raise my KH to about 4 degrees and the pH to about 7.4, which is where it was before the tannins started lowering it. pH has now stabilized to around 7.3-7.4. With tank cleaning/water changes, more buffer will eventually need to be added to keep things stable. It seems to be a decent product, and was very cheap, so I'm happy. ### ⭐⭐⭐⭐⭐ Works! *by S***N on October 20, 2025* Works well, it's very effective. Exactly as described ## Frequently Bought Together - Alkaline Buffer, 300 g / 10.5 oz - Seachem Acid Buffer 300gram - Seachem Equilibrium 300gram --- ## 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.tn/products/9143558-alkaline-buffer-300-g-10-5-oz](https://www.desertcart.tn/products/9143558-alkaline-buffer-300-g-10-5-oz) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-04-23*