--- product_id: 254347798 title: "Sera Kh/Ph-Plus Water Stabilizer 100 Ml" brand: "sera" price: "€ 13.55" currency: EUR in_stock: true reviews_count: 4 category: "Sera" url: https://www.desertcart.pt/products/254347798-sera-kh-ph-plus-water-stabilizer-100-ml store_origin: PT region: Portugal --- # Optimized for African cichlids & community tanks Precise KH boost: +1°dKH/5ml/30L Stable pH buffering for fish health Sera Kh/Ph-Plus Water Stabilizer 100 Ml **Brand:** sera **Price:** € 13.55 **Availability:** ✅ In Stock ## Summary > 💧 Keep your aquarium’s balance flawless — because your fish deserve the best! ## Quick Answers - **What is this?** Sera Kh/Ph-Plus Water Stabilizer 100 Ml by sera - **How much does it cost?** € 13.55 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/254347798-sera-kh-ph-plus-water-stabilizer-100-ml) ## Best For - sera enthusiasts ## Why This Product - Trusted sera brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **pH Stability Buffer:** Prevents dangerous pH swings, ensuring a safe and stress-free environment for your aquatic life. - • **Precision KH Control:** Easily raise carbonate hardness by 1°dKH per 5ml for perfectly balanced water. - • **Easy Dosage & Monitoring:** Simple dosing with clear guidelines; pair with sera pH and KH tests for perfect water chemistry control. - • **Tailored for Tough Species:** Creates ideal water conditions for sensitive fish like African cichlids, supporting vibrant, healthy tanks. - • **Long-lasting Water Durability:** Enhances water stability, reducing maintenance frequency and keeping your aquarium thriving. ## Overview Sera KH/Ph-Plus Water Stabilizer is a liquid treatment designed to precisely increase carbonate hardness (KH) and gently stabilize pH levels in freshwater aquariums. By buffering against rapid pH drops, it creates a durable, easy-to-maintain environment ideal for community tanks and demanding species like African cichlids. Dosage is 5ml per 30 liters to raise KH by 1°dKH, promoting optimal fish health and water quality. ## Description The carbonate hardness (KH) is one of the most important water parameters in an aquarium. A majority of the fish species kept in freshwater aquariums refers relatively hard water. Furthermore, the KH serves as a buffer that prevents dangerous pH value variations (among others, rapidly sinking pH value). The KH should be kept at least at 6°dKH for all community tanks as a basic rule (considerably higher for special cases such as African cichlids). This ensures the fish do well, and the aquarium water turns out particularly durable and easy to maintain. sera KH/pH-plus precisely and lastingly raises the KH to the desired value. The pH value is gently raised as well and, above all, safely stabilized. Recommended dosage: 5 ml sera KH/pH-plus increase the carbonate hardness in 30 l of water by 1°dKH. We recommend raising the KH in an aquarium by not more than 2ºdKH per day. Check the pH and KH values with the sera pH-Test and the sera kH-Test 30 minutes before and after the addition. Review: It came in all in German, no English instructions. So I went on their website and it says put 5ml in 30litres of water. I have a 120litre tank so you'd think I'd need 20ml. Wrong. I put 3ml in 120litres of water and the readings are off the scale. I'm having to do multiple water changes to get it down. This is dangerous if you follow the instructions. You are best off buying something else... 4 days later and 2 water changes a day it's destroyed my nitrogen cycle. How can they get away with peddlin this sh*te Review: Il suo lavoro lo fa molto bene! Buon prodotto! ## Features - Is effective against biogenic decalcification - The carbonate hardness (KH) is one of the most important water parameters in an aquarium. - The KH serves as a buffer that prevents dangerous pH value variations (among others, rapidly sinking pH value). - Ensures the fish do well, and the aquarium water turns out particularly durable and easy to maintain. - Creates appropriate conditions (e.g. for African cichlids) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0013ZAGLY | | Batteries Included | No | | Best Sellers Rank | #37,529 in Pet Supplies ( See Top 100 in Pet Supplies ) #308 in Fish Medication & Health Supplies | | Customer Reviews | 4.0 4.0 out of 5 stars (57) | | Date First Available | 21 September 2012 | | Item Form | Liquid | | Item Weight | 145 g | | Item model number | 3810 | | Product Dimensions | 3.99 x 3.99 x 12.5 cm; 145.15 g | | Quantity | 1 | | Volume | 3.38 Fluid Ounces | | batteries required | No | ## Product Details - **Brand:** Sera - **Item form:** Liquid - **Item weight:** 145 g - **Liquid volume:** 100 Milliliters - **Manufacturer:** sera ## Images ![Sera Kh/Ph-Plus Water Stabilizer 100 Ml - Image 1](https://m.media-amazon.com/images/I/61OtZ0CtFDL.jpg) ## Customer Reviews ### ⭐ Review *by C***N on 19 March 2019* It came in all in German, no English instructions. So I went on their website and it says put 5ml in 30litres of water. I have a 120litre tank so you'd think I'd need 20ml. Wrong. I put 3ml in 120litres of water and the readings are off the scale. I'm having to do multiple water changes to get it down. This is dangerous if you follow the instructions. You are best off buying something else... 4 days later and 2 water changes a day it's destroyed my nitrogen cycle. How can they get away with peddlin this sh*te ### ⭐⭐⭐⭐⭐ Review *by C***N on 22 June 2025* Il suo lavoro lo fa molto bene! Buon prodotto! ### ⭐ Review *by C***. on 2 September 2025* Mindesthaltbarkeit seit 2023 abgelaufen Was soll ich damit anfangen? Ich riskiere doch nicht, sowas in mein Becken zu schütten. Warum ist der Umtausch nicht möglich? Enttäuschung pur Neu: Mir wurde nun, nach einiger Bemühung meinerseits, doch ein Ersatzprodukt zugeschickt. Auch hier ist das MHD seit 2023 abgelaufen. Meine Empfehlung: DIESES PRODUKT NICHT BEI AMAZON BESTELLEN ## Frequently Bought Together - sera Kh/Ph-Plus Water Stabilizer, 100 ml - Tetra Test 6-in-1 Strips Aquarium to Test 6 Essential Water Quality Parameters in Less Than 60 Seconds, Pack of 25 - sera pH-Test 15ml --- ## 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.pt/products/254347798-sera-kh-ph-plus-water-stabilizer-100-ml](https://www.desertcart.pt/products/254347798-sera-kh-ph-plus-water-stabilizer-100-ml) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-17*