Bests & Worsts Reviews from Amazon

I had to update my review. I thought I was getting accurate readings and that there was a separate issue with my plants. Then I got a digital pH tester to ensure I was doing things right. After calibrating the digital tester, I tested my liquid feed with both the digital and these pH test strips. The digital meter consistently gave me the same reading on two different solutions that I mixed exactly the same: 5.6. The color the paper strips tested at could have been read as anywhere from 7-9 pH. That is a HUGE difference for cannabis plants and other things. My plants immediately began improving once I was pH'ing correctly. The writing in this package is mostly Chinese, the translation of the instructions are not correct, and the color on the strip changes immediately after pulling it out of the water making it hard to know what to read at. I've used different pH strips (with all English writing) that worked much better than this. My advice: get a made in America pack or spend the extra bucks and get a digital tester. Bottom line...don't get this one!