Smart pH Meter for Water pH and EC Meter for Hydroponics Nutrients Digital pH and PPM Tester for Reservoir Water 4 in 1 pH EC TDS Temp Tester for Indoor Plant Growing, DWC, Pool, Aquariums

The meter itself works accurately and is easy to use for checking pH and other readings. Unfortunately the glass probe arrived broken, which was disappointing at first. That said, the company handled it exactly how they should. They replaced the probe quickly with no hassle, and the replacement has been working properly since. Calibration is straightforward and readings are stable. Good product overall, and solid customer support when something went wrong.

AAA+++

Was looking for a solid backup pH meter pairing with my Gravity probe and this was new to market and holding good reviews. While calibration is straight forward and user friendly, I calibrate using all three: 4, 6.86, and 9.18 ... I noticed the pH slippage soon after and by day 3, when I need to use it, the pH offset was +.7. At first, I thought, "great another Vivosun cheap-o." -- After calibrating several times in a short timeframe, I was in a rush one day and only calibrated using 6.86 and 4. After a few days, when I needed to pH again, magical it was only .02 off from my Gravity printout. Ever since then I went more than 3 weeks without the calibration process and the pH slippage as only been +.04. -- Images were taking +3 weeks after calibration. Not only does it give accurate pH level(s), but also gives temperature, EC and PPM readability. Conclusion: Although I noticed the offset/slippage in the beginning using all 3 pH solutions, this has been holding up great ever since the 6.86 & 4 calibration. This would be a great introduction investment if your looking for a quality pH meter that's quick to printout pH values within .05 range. The temperature and EC functions have been on point. The EC comes calibrated and reads 'natural values'. Not sure how long the battery with live, but with a quick backlight timer, it's a function that many would say is a negative, but I see it as a battery saver, which is a plus. Remember to store sensor in 3M solution when not in use. I recommend.

The product is great . The app. I'm not so sure about.

This is a great product, very easy to use and simple to configure when needed. Speedy and accurate for all the serious growers who don't have time to play with other test equipment a true value-add product for your gardening needs!

Ph off by 1 point out of the box. Calibrated with the included solution and still .5 points off. And the ppm reading is off by 50+. Tested this against a Calibrated bluepen meter that is accurate. It's hit or miss with these cheap testers and this one was a miss. The temperature reading was the only thing that was good.

Worked great for two months, then the app stopped connecting to the meter. The meter works fine, but the app is not. It didn't need an update. I tried closing and opening he app, uninstall and re-installing the app. There is no in app way to contact the company. I bought this reader specifically for the app so I wouldn't struggle to read it under the canopy of my plants. Will buy from someone else next time.

Buy two different brands they both say the same thing they both accurate if they something different than you know if you’re new to this I recommend you get one that test for salt buildup to