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🌊 Master your reef’s chemistry like a pro — because your aquatic paradise deserves nothing less!
The API REEF MASTER TEST KIT is a specialized aquarium water test kit designed exclusively for reef tanks. It accurately measures four critical water parameters—calcium, carbonate hardness, phosphate, and nitrate—that directly impact coral growth and fish health. The kit includes seven testing solutions, four capped test tubes, and color-coded cards for precise, easy-to-interpret results. Ideal for weekly monitoring, it helps reef enthusiasts prevent harmful water imbalances, ensuring a vibrant and thriving underwater ecosystem.













| 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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