Review on 🐠 Digital Temperature-Controlled Aquariums for Optimal Swimming and Drinking Experience by Fernando Beck

Having no other gauge to compare other than a thermometer I have to say this. It showed the difference between tap water and filtered water from the fridge, the fridge had less PPM and us/cm which is good but then again I don't have a professional meter to compare. However, I have a thermopen, which is a very accurate thermometer, and the difference was 15 degrees. See image. Since the thermometer reading was far from correct, I have to assume the other readings are just as bad. It's like a toy and lets you compare if ppm and us/cm are higher or lower between multiple samples, but I don't trust the actual numbers. I'll spend a lot more to get real, accurate readings. I don't recommend this for accurate readings, spend more and get a better block.