How to Measure pHĪquarium Co-Op Multi-Test Strips include a test for measuring pH, and we recommend using it as part of your tank maintenance routine. Generally, the pH level isn’t a critical number to hit if you’re keeping fish for fun, but it can become more important if you’re trying to breed certain fish and raise their fry. South American fish and Caridina crystal shrimp tend to prefer lower pH, whereas African cichlids and livebearers prefer higher pH. Most freshwater fish are happy at pH levels between 6.5 to 8.0. What is the Ideal pH Level for Aquariums? Acidic liquids (such as orange juice and vinegar) have a pH of less than 7.0, and alkaline liquids (like green tea and soap) have a pH of more than 7.0. On a scale of 0 to 14, pure water has a neutral pH of 7.0. PH measures the amount of hydrogen ions in liquids and tells you how acidic or basic is your water. What’s the difference between them, and how do they impact our fish? This practical guide for beginners explains what these parameters mean, when you should test for them, and how to raise or lower their levels if needed. PH, GH, and KH are terms commonly used in water chemistry, but there is a lot of confusion about them in the freshwater aquarium hobby.
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