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🌊 Keep your reef thriving — don’t let calcium levels sink your aquatic paradise!
The API Calcium Test Kit is a professional-grade aquarium water testing solution designed to accurately measure calcium levels from 0-4 ppm, essential for the health and growth of corals and crustaceans in saltwater aquariums. The kit includes two bottles of testing solution and a capped test tube, enabling easy, weekly monitoring to prevent invisible water problems. Trusted by aquarists for over 60 years, API ensures your reef ecosystem stays vibrant and balanced.













| ASIN | B0006JDWHI |
| ASIN | B0006JDWHI |
| Allergen Information | Apple Free |
| Best Sellers Rank | #2,557 in Pet Supplies ( See Top 100 in Pet Supplies ) #4 in Aquarium Test Kits |
| Brand Name | API |
| Customer Reviews | 4.4 4.4 out of 5 stars (746) |
| Date First Available | June 20, 2004 |
| Department | men, women |
| Global Trade Identification Number | 00317163120699 |
| Item Form | Liquid |
| Item Type Name | Aquarium Test Kit |
| Item Weight | 68.04 g |
| Item model number | 69L |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Manufacturer Part Number | 69L |
| Manufacturer recommended age | 1 month and up |
| Model Number | 69L |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Product Dimensions | 2.75 x 1.63 x 5.13 inches; 2.4 ounces |
| Target Species | Invertebrates |
| UPC | 317163120699 |
| Unit Count | 1 Count |
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