The API Freshwater pH Test Kit (250 tests) helps you keep your fish healthy by monitoring one of the most important water parameters: pH. Designed for freshwater aquariums, this liquid test kit accurately measures pH levels from 6.0 to 7.6, allowing you to detect dangerous fluctuations before they harm your fish.

Regular testing helps prevent invisible water problems caused by fish waste, uneaten food, and tap water. The kit includes everything you need for easy, repeatable testing and is ideal for community tanks, goldfish setups, and most tropical freshwater aquariums.

Key Features

• Up to 250 Tests per Kit
  Long-lasting liquid test kit for regular weekly monitoring.

• Accurate pH Range 6.0–7.6
  Ideal for most freshwater community fish, goldfish, livebearers, and many tropical species.

• Prevents Invisible Water Problems
  Helps detect pH swings caused by waste, overfeeding, and water changes before fish are affected.

• Easy to Use
  Add test solution to the sample in the glass tube, compare to the color chart, and adjust if needed.

• Trusted Brand
  API has over 50 years of experience creating research-based aquarium care solutions.

What’s Included

• 1 × Bottle of pH Test Solution

• 1 × Color Comparison Card

• 1 × Glass Test Tube with Cap

• Instructions for use