--- product_id: 4435654 title: "API CALCIUM TEST KIT Saltwater Aquarium Water 1-Count Test Kit" brand: "api" price: "334 kr" currency: NOK in_stock: true reviews_count: 13 category: "Api" url: https://www.desertcart.no/products/4435654-api-calcium-test-kit-saltwater-aquarium-water-1-count-test store_origin: NO region: Norway --- # long-lasting multi-test kit essential for thriving reef ecosystems 0-4 ppm precise calcium detection API CALCIUM TEST KIT Saltwater Aquarium Water 1-Count Test Kit **Brand:** api **Price:** 334 kr **Availability:** βœ… In Stock ## Summary > πŸ§œβ€β™‚οΈ Keep your reef radiant β€” test, protect, and thrive with API Calcium Test Kit! ## Quick Answers - **What is this?** API CALCIUM TEST KIT Saltwater Aquarium Water 1-Count Test Kit by api - **How much does it cost?** 334 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/4435654-api-calcium-test-kit-saltwater-aquarium-water-1-count-test) ## Best For - api enthusiasts ## Why This Product - Trusted api brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Trusted API Quality:** Backed by nearly 60 years of aquarium care expertise for reliable, professional results. - β€’ **Complete Testing Kit:** Includes 2 bottles of testing solution and a capped test tube for hassle-free use. - β€’ **Easy Weekly Maintenance:** Simple titration method designed for consistent weekly water quality checks. - β€’ **Precision Calcium Monitoring:** Accurately measures calcium levels from 0 to 4 ppm to keep your reef thriving. - β€’ **Coral & Crustacean Growth Support:** Prevents calcium deficiencies that stunt growth of corals and crustaceans. ## Overview The API Calcium Test Kit is a professional-grade aquarium water testing solution designed to accurately measure calcium levels between 0-4 ppm. Essential for maintaining healthy coral, crustaceans, and reef ecosystems, this kit includes two bottles of testing solution and a capped test tube for easy, precise titration testing. Ideal for weekly monitoring, it helps prevent invisible water problems that can inhibit aquatic life growth, ensuring your saltwater aquarium remains vibrant and thriving. ## Description Keep your aquatic life healthy and thriving by testing your aquarium water's calcium levels regularly with this easy-to-use API CALCIUM TEST KIT for aquariums.Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Calcium is one of the most important elements in a reef aquarium. Reef invertebrates such as corals, crustaceans, mollusks and even some types of encrusting algae need calcium to grow and remain healthy. Over time, calcium levels drop as invertebrates use calcium in aquarium water. The API CALCIUM TEST KIT measures calcium levels as low as 20mg/L. It contains two calcium test bottles, capped test tube and instructions. For use in reef aquariums. With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. Review: Good to go. - Great kit as always with API testers. Review: Easy to use test and great for my purposes - This is a great test. It's easy to use and one kit will give you several months of tests. The test itself is very straightforward using a method called titration: add drops from bottle 1, shake, then add drops from bottle 2 until the solution turns from pink to the purple color indicated on the instructions. In-between drops from bottle 2, you invert the tube with the cap securely on. The more drops you need from bottle 2, the more calcium you have. You check the back of the instructions to translate number of drops to ppm. I have been keeping SPS, LPS, softs, and calcium-reliant macro algae in a small (25 gallon) system for some time with this kit and have had no calcium problems. As a quick tip: if you have multiple tests you run in beakers, get a 100cc syringe and attach some airline hose to the end. That way, you can fill the syringe with about 30cc of tank water and squirt it into each beaker to get the perfect amount in each (usually 5cc). No more dipping beakers in your tank and pouring some out, refill, pour out, refill, etc. Just put in 5cc directly and voila! Mine came with instructions and everything I needed. I have had no problems using this. Note that, the higher your calcium levels, the more drops from bottle 2 it will take and, thus, the fewer total tests you will get from this kit. ## Features - Contains one (1) API CALCIUM TEST KIT Saltwater Aquarium Water 1-Count Test Kit, including 2 bottles of testing solution and 1 test tube with cap - Helps monitor calcium and prevent invisible water problems that can be harmful to coral & crustaceans - Accurately detects calcium levels from 0-4 ppm - Prevents low levels of calcium which inhibit corals and crustaceans growth - Use for weekly monitoring and when water or aquatic life problems appear ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0006JDWHI | | Allergen Information | Apple Free | | Best Sellers Rank | #7,020 in Pet Supplies ( See Top 100 in Pet Supplies ) #11 in Aquarium Test Kits | | Brand | API | | Brand Name | API | | Customer Reviews | 4.4 out of 5 stars 745 Reviews | | Global Trade Identification Number | 00317163120699 | | Item Form | Stick | | Item Type Name | Aquarium Test Kit | | Item Weight | 68.04 g | | Manufacturer | Mars Fishcare | | Manufacturer Part Number | 69L | | Model Number | 69L | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Invertebrates | | UPC | 317163120699 | | Unit Count | 1 Count | ## Images ![API CALCIUM TEST KIT Saltwater Aquarium Water 1-Count Test Kit - Image 1](https://m.media-amazon.com/images/I/61r4L5M4AzL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good to go. *by J***D on June 4, 2026* Great kit as always with API testers. ### ⭐⭐⭐⭐⭐ Easy to use test and great for my purposes *by J***. on June 8, 2014* This is a great test. It's easy to use and one kit will give you several months of tests. The test itself is very straightforward using a method called titration: add drops from bottle 1, shake, then add drops from bottle 2 until the solution turns from pink to the purple color indicated on the instructions. In-between drops from bottle 2, you invert the tube with the cap securely on. The more drops you need from bottle 2, the more calcium you have. You check the back of the instructions to translate number of drops to ppm. I have been keeping SPS, LPS, softs, and calcium-reliant macro algae in a small (25 gallon) system for some time with this kit and have had no calcium problems. As a quick tip: if you have multiple tests you run in beakers, get a 100cc syringe and attach some airline hose to the end. That way, you can fill the syringe with about 30cc of tank water and squirt it into each beaker to get the perfect amount in each (usually 5cc). No more dipping beakers in your tank and pouring some out, refill, pour out, refill, etc. Just put in 5cc directly and voila! Mine came with instructions and everything I needed. I have had no problems using this. Note that, the higher your calcium levels, the more drops from bottle 2 it will take and, thus, the fewer total tests you will get from this kit. ### ⭐⭐⭐⭐⭐ Great product *by N***D on June 27, 2026* Works perfectly highly recommended ## Frequently Bought Together - API Calcium Test Kit Saltwater Aquarium Water 1-Count Kit, 69L (69L) - API KH Carbonate Hardness Test Kit, multicolor --- ## 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.no/products/4435654-api-calcium-test-kit-saltwater-aquarium-water-1-count-test](https://www.desertcart.no/products/4435654-api-calcium-test-kit-saltwater-aquarium-water-1-count-test) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-16*