API Saltwater Master Test Kit API Saltwater Master Test Kit is a liquid aquarium test kit for marine aquariums, measuring high range pH, ammonia, nitrite, and nitrate to help protect saltwater fish and invertebrates from unsafe water conditions. API Saltwater Master Test Kit for Core Marine Aquarium Parameters Saltwater aquariums can develop harmful ammonia, nitrite, nitrate, and pH problems from fish waste, uneaten food, plant refuse, and organic buildup. This kit combines the main saltwater water-quality tests needed for routine monitoring, cycling checks, and troubleshooting marine systems. Marine Water Testing for High Range pH Ammonia Nitrite and Nitrate Tests high range pH, ammonia, nitrite, and nitrate. Designed for saltwater aquarium water testing. Helps monitor core parameters that can affect marine fish and invertebrate health. Useful for new saltwater aquarium cycling and established tank maintenance. Helps detect invisible water problems before they result in fish stress or losses. Includes multiple liquid reagents, test tubes, colour chart, tray, and instructions. Can be used in reef aquariums, though API recommends the Reef Master Test Kit for reef-specific calcium, KH, phosphate, and nitrate testing. API Saltwater Master Test Kit Use and Reef Notes Product type: liquid saltwater master test kit Parameters tested: high range pH, ammonia, nitrite, and nitrate Use for: marine and saltwater aquariums Reef use: suitable for core marine water checks, but not a replacement for reef calcium, KH, and phosphate testing Recommended frequency: weekly or whenever water or livestock problems appear Rinse test tubes immediately after use to help prevent reagent residue and staining. API Saltwater Master Test Kit Directions Select the parameter being tested and read that test’s instructions before adding reagents. Rinse the test tube and fill it with aquarium water to the marked line. Add the correct number of drops from the required test solution bottles in the listed order. Cap and mix the sample exactly as directed. Wait for the specified colour-development time before reading the result. Compare the test sample with the appropriate saltwater colour chart in good lighting. Rinse test tubes after use and store reagents tightly capped. What's Included Six liquid test solution bottles Four test tubes with snap-tight caps Holding tray Colour chart Step-by-step instruction booklet