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🌊 Master your reef’s chemistry, because your corals deserve the best!
The API REEF MASTER TEST KIT is a comprehensive water testing solution designed exclusively for reef aquariums. It accurately measures four critical parameters—Calcium, carbonate hardness (KH), phosphate, and nitrate—to maintain a balanced environment essential for coral and reef invertebrate health. The kit includes all necessary components for easy, weekly testing, helping prevent harmful water conditions that can lead to fish loss and algae blooms. Trusted by aquarists for over 60 years, API delivers precise, user-friendly tools to keep your reef thriving.













| ASIN | B001D6Z7QW |
| ASIN | B001D6Z7QW |
| Best Sellers Rank | #1,343 in Pet Supplies ( See Top 100 in Pet Supplies ) #2 in Aquarium Test Kits |
| Brand Name | API |
| Color | Catnip |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,878) |
| Date First Available | July 25, 2005 |
| Date First Available | July 25, 2005 |
| Department | Unisex-Adult |
| Department | Unisex-Adult |
| Directions | Follow the instructional booklet directions for individual testing of each water parameter, and test weekly for best results. |
| Included Components | all |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 7 x 5.75 x 4.75 inches |
| Item Package Dimensions L x W x H | 6.8 x 5.1 x 4.3 inches |
| Item Weight | 1.1 Pounds |
| Item model number | 402M |
| Item model number | 402M |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Manufacturer recommended age | 1 month and up |
| Material | Plastic |
| Model Name | REEF MASTER TEST KIT |
| Number of Items | 12 |
| Product Dimensions | 7 x 5.75 x 4.75 inches; 1.1 Pounds |
| Size | Pack of 1 |
| Style | Reef |
| Target Audience Keyword | fish |
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