API 5-in-1 Aquarium Test Strips

Take the guesswork out of aquarium maintenance with API 5-in-1 Aquarium Test Strips. Designed for both freshwater and saltwater aquariums, these easy-to-use test strips allow you to quickly monitor five important water parameters that affect fish health—all in a single test. For best results, test your aquarium weekly and whenever adding new fish, after water changes, or if fish appear stressed or unwell.

Maintaining stable water quality is one of the most important aspects of successful fish keeping. Poor water conditions can lead to stress, disease, algae issues, and fish loss long before problems become visible. In just seconds, the strips measure pH, Nitrite (NO₂), Nitrate (NO₃), Carbonate Hardness (KH), and General Hardness (GH), helping you identify invisible water quality issues before they become harmful to your fish. Simply dip the strip into your aquarium water, compare the colours to the included chart, and take action if needed to maintain a healthy aquatic environment.

Features

• Tests 5 water parameters in one simple step
• Suitable for both freshwater and saltwater aquariums
• Fast "Dip & Read" testing method
• Easy-to-read colour chart included
• Helps detect invisible water problems before they affect fish
• Ideal for routine aquarium maintenance
• Contains 25 test strips per pack