(via https://www.youtube.com/watch?v=x94JFtqrlfw) <a href="http://www.tomoson.com/?code=TOP83b494e030a2f7fd3d19fcad8243bdca" rel="nofollow"><img style="display: none" src="http://www.tomoson.com/images/front/pixel.png" /></a> The husband and I did a review on SelpHbalance’s TDS, EC, & Temp Meter. He is a scientist at a pharmaceutical company, so he was the perfect person to help me review. This meter, we thought was pretty nice, and fairly accurate. Its nice it can measure temperature, too. It would be perfect for pools and hot tubs (and I will probably gift it to my parents, who have a hot tub, especially since we now have several meters.) I think the best thing is that it has a “hold” feature, where you can dip it in the fluid, press “hold,” and it will suck up some of the liquid so you do not have to keep it in there until it is done. Which doesn’t take long anyway, but it is still nice that it has that ability. It can be found at https://www.amazon.com/selpHbalance-Pro-Grade-Drinking-Aquariums-Professional/dp/B01J1JK6KE/ref=sr_1_cc_4?s=aps&ie=UTF8&qid=1474897659&sr=1-4-catcorr&keywords=selphbalance#feature-bullets-btf <a href="http://www.tomoson.com/?code=BOTTOM83b494e030a2f7fd3d19fcad8243bdca" rel="nofollow"><img style="display: none" src="http://www.tomoson.com/images/front/pixel.png" /></a>