Review on Efficient and Versatile: Jebao DP-3 Programmable Auto Dosing Pump with 3 Channels in Sleek Black by Gin Bajema

I bought three of these devices for dosing fertilizer in planted aquariums. I calibrated with a good quality graduated cylinder, but all three units overdose by about 1-2mL for volumes below 10mL and 2-3mL for volumes between 10-20mL. Not a major issue, easy to account for when creating a dispensing program. My biggest complaint is that the backlight on one of the screens never turns off, the backlight on other devices turns off after about 30 seconds of inactivity. The one in question stays on and the text disappears after about 30 seconds, so I'm disappointed. That being said, all 3 units work well, are accurate, and hit the same numbers repeatedly. I just have to keep the displacement of the volumes due to an inaccurate calibration. Remember that precision and accuracy are not the same thing.