Colombo pH test kit, pH is a measure of how acidic your water is. Fish do not like fluctuating pH levels, and some need to be kept at specific pH levels.
The only way to determine the pH of the water is with a Test kit. The only way to know what the pH level is, is by testing the water with an pH test kit. Regular testing will prevent damage caused by low pH.
Colombo have produced test kits that are developed especially for seawater. These tests give the best results!
test ph value from ph 6 to 9