--- product_id: 158238526 title: "JBL Water Test Set, For fresh and saltwater aquariums and ponds, ProAquaTest KH Carbonate hardness" price: "€ 33.50" currency: EUR in_stock: true reviews_count: 1 url: https://www.desertcart.hr/products/158238526-jbl-water-test-set-for-fresh-and-saltwater-aquariums-ponds store_origin: HR region: Croatia --- # Suitable for fresh & saltwater Precise carbonate hardness measurement Easy color-change reagent test JBL Water Test Set, For fresh and saltwater aquariums and ponds, ProAquaTest KH Carbonate hardness **Price:** € 33.50 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of water woes with precision testing that keeps your aquatic world thriving! ## Quick Answers - **What is this?** JBL Water Test Set, For fresh and saltwater aquariums and ponds, ProAquaTest KH Carbonate hardness - **How much does it cost?** € 33.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/158238526-jbl-water-test-set-for-fresh-and-saltwater-aquariums-ponds) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Accurate KH Monitoring:** Keep your aquarium’s carbonate hardness perfectly balanced for thriving aquatic life. - • **Simple Colorimetric Test:** Visual blue-to-yellow color change makes water testing intuitive and fast. - • **Complete Ready-to-Use Kit:** Includes reagent and cuvette for immediate testing—no extra tools needed. - • **Trusted German Engineering:** 50 years of innovation ensure reliable, high-quality results every time. - • **Universal Water Compatibility:** Designed for both freshwater and saltwater aquariums and ponds—one kit fits all. ## Overview The JBL Water Test Set ProAquaTest KH offers a quick, reliable way to measure carbonate hardness in fresh and saltwater aquariums and ponds. Featuring an easy-to-read color change from blue to yellow, this complete kit includes reagent and cuvette for immediate use. Maintaining optimal KH levels stabilizes pH and supports healthy fish and plants. Developed with 50 years of expertise and trusted by aquarists worldwide, it’s the essential tool for pristine aquatic environments. ## Description From the manufacturer For natural conditions in the aquarium and pond Improved rapid test for the determination of carbonate hardness The appropriate water values in any given aquarium depend on the fish population and the existing plants. Even if the water looks clear it can be polluted. If the values are poor, diseases or algae can form in aquariums or ponds. For a healthy aquarium or pond with near-natural conditions it is important to check and adjust the water values regularly. For water analysis JBL offers both rapid and colour change water tests. These determine a specific value or several values simultaneously. They can be used to detect algae problems and negative nitrate, nitrite, potassium, magnesium values etc. In the JBL Online Laboratory you can enter your water values and receive an analysis in seconds. Your advantages at a glance Quick test for optimal water conditions in aquariums and ponds Advanced water test series Colour change test from blue to yellow Easy application Complete test set for direct application Suitable for fresh and salt water Why test? Maintaining a suitable KH value as constantly as possible is an important prerequisite for the well-being of aquarium and pond inhabitants, as well as for the thriving of aquatic plants. The carbonate hardness is one of the most important values of the water, as it keeps the pH-value stable. The KH should never drop below 4 °dKH. Even better water tests Scientists, aquarists and pond enthusiasts all use JBL Water Tests. Over the years, these users have made suggestions for improvements, and the JBL development team has collected their feedback and made changes to best fit their needs. This starts with the folding boxes, on which pictograms show immediately whether the test is suitable for fresh, seawater and/or pond water. These pictograms are repeated on the colour bars of the colour charts, on which recommended areas can be read. 50 years of innovation The family business, now managed by the 2nd generation, is active worldwide and permanently sets new standards through active research. With its production site in Germany, JBL assumes social responsibility and ensures high quality results in the aquarium, terrarium and garden ponds. Review: good - good job ## Features - Causes severe skin burns and eye damage. - Flammable liquid and vapour. - Advanced water test series: Easy and safe control of the water values of aquariums and ponds, Ideal for determining the optimum carbonate hardness for fresh and salt water aquariums as well as ponds - Colour change test: Fill plastic cuvette with sample water, add reagent drop by drop until colour changes from blue to yellow, number of drops corresponds to the carbonate hardness - Recommended use for new installations: 1 time per week, later 1 time per month - For direct use thanks to complete set with reagent and plastic cuvette, refill reagent available separately - Contents: 1x JBL Water Test Set, ProAquaTest KH, incl. 1 reagent and 1 plastic cuvette ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07R8YW2G1 | | Batteries required | No | | Best Sellers Rank | 60,297 in Pet Supplies ( See Top 100 in Pet Supplies ) 135 in Aquarium Test Kits | | Customer Reviews | 4.2 4.2 out of 5 stars (10) | | Date First Available | 30 April 2019 | | Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. | | Item Weight | 60 g | | Item model number | 2411017 | | Product Dimensions | 10.6 x 4.3 x 17.5 cm; 60 g | | Quantity | 1 | | Size | One Size | ## Images ![JBL Water Test Set, For fresh and saltwater aquariums and ponds, ProAquaTest KH Carbonate hardness - Image 1](https://m.media-amazon.com/images/I/8151hnlI7yL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ good *by D***R on 15 October 2022* good job --- ## 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.hr/products/158238526-jbl-water-test-set-for-fresh-and-saltwater-aquariums-ponds](https://www.desertcart.hr/products/158238526-jbl-water-test-set-for-fresh-and-saltwater-aquariums-ponds) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-27*