Review on WEKSUN pH and TDS Meter Kit - Digital Water Quality Tester for High Accuracy Testing of pH and TDS Levels - Backlit Screen - Ideal for Drinking Water, Aquariums, and Swimming Pools by Michael Boyce

Update: I've had it for two weeks now and initial tests seem to be working fine. I checked them all with pH strips but actually I was looking for a more convenient and less wasteful way to test them in a VPN, but both temperature and pH are one of the most important things. I exclusively do organic gardening with living soil and I've been a grower in the cannabis industry for four years and the problem with this product exists at work and the first time was accurate I don't know maybe a week and a half and now this reading is always still pore is not ok, that's extremely high acidity with water i tested to make sure it's 100% good, it's on the pH scale at around 6.5 which is where i like to sit. In any case, for some reason this meter has already gone as far as showing the pH of my plain water so acidic it will kill your plants. I see the same baby that comes with a pH solution so you can recalibrate it which is nice but as it is not included in this kit there is no way to recalibrate it unless I order it and it costs the same. Order this how it's done just order a new one that comes already with this one so I wouldn't recommend this product, you get what you pay for which is cheap so I just remembered. Loved it because it worked and I had an issue with one of my planters when trying to lower the ppm and pH levels and it read the flow perfectly and helped me solve it after which it worked fine. After that, just check a few things before reading compost tea. but then again, if after a few weeks it just doesn't work and also doesn't give me the option to exchange or return it, that's a little frustrating and a waste of money, I'd buy the gold standard, either use the strips or the liquid tester, from which by the way you know it's that pH when it turns that color because after retesting these strips they're so far off the mark I'd kill everything if I put the water on what I have need to make up for it is so easy to do it would boil it. Still disappointed, thought I could exchange it or return it, but I don't see an option for that either. Updated: I DO NOT RECOMMEND THIS KIT. I always do a paint test kit for accuracy when trying to get things well graded, but they have worked great for me to keep my ppm and pH where I want and check flow etc. d.