(via https://www.youtube.com/watch?v=-HqleICBmlE) <a href="http://www.tomoson.com/?code=TOP8ed7f5af42c56612f3a696b4d245ebad" rel="nofollow"><img style="display: none" src="http://www.tomoson.com/images/front/pixel.png" /></a> We reviewed yet another pH meter! This one was our favorite. We found it was the most accurate, and really liked that the screen lit up. Very handy, if say you decide to open up the hot tub in the middle of the night on a whim. If you like it, you can find it here: https://www.amazon.com/Accuracy-0-00-14-00-Calibration-Aquarium-Handheld/dp/B01EH19S0K/ref=sr_1_8?ie=UTF8&qid=1474858533&sr=8-8&keywords=ph+Meter <a href="http://www.tomoson.com/?code=BOTTOM8ed7f5af42c56612f3a696b4d245ebad" rel="nofollow"><img style="display: none" src="http://www.tomoson.com/images/front/pixel.png" /></a>