My pH meter is a piece. It goes out of whack by like .5 within 3 days. Definitely get some 7.0 reference solution (usually by the pH related stuff in the store) and calibrate your meter. Also, you should calibrate at least once weekly to make sure you are getting an accurate measurement.
dejayou30 Reviewed by dejayou30 on . pH Problems?!?!? My digital ph reader is showing 5.76, but when i tested with litmus paper its showing a deep red, very low, it there any chemicals that could mess the litmus papers reading up? using superthrive, liquid karma, & pure blend, any ideas? is the paper wrong or the digital? Rating: 5