well I have tested this with my other ph tester and get the same readings with thn both. so it can't be that bad. I noticed though that the battery has to be at full power to work correctly. I do get diferent reading wth different soil. tested that aswell. with both my tests. there is a certain way to use them if used incorrectly you WILL get mix-mached results. use to work at a nusery and this is what they used. I seen one and bought it. either yours was garbage or wasn't calibrated correctly. have you looked at the one that you had and seen the calibration screws in the back? these do need to be adjuste and overall wrk well to get you in the ball park. I basically wanted it for the fertility test so I know when to feed.

so for me it works. but I still need a test for my water.
pudder Reviewed by pudder on . Anyone ever use one of these before? I bought this PH/Fertility tester today and it seems to be pretty accurate. I have tested with my normal methods of testing which is one of those water, soil, or what ever you are testing shakers. And I get around the same reading as I do with the new electronic meter. The fertility check also seems to work. It reads how much P-N-K is in the soil and gives you a reading. not enough, ideal, or to high. I was feeding one plant water only. Tested it and it said to little. I added the Rating: 5