GoldenPanda
Aquarium Advice Apprentice
Hello everyone, I recently purchased the API freshwater master test kit however I am a bit confused as to which bottle I should be using to test the PH as this kit comes with two bottles. I have already tested with both bottles, the first bottle gives me a reading of about 6.4, but the high range bottle tells me its around 7.4. Needless to say I am very confused! so any help would be most welcome please. Thank you.