I bought one and found it very easy to get connected to wifi, but I royally messed up with it because of the horrible instructions. It turns out, from the app, you need to have the doser's main control in the "on" position, but each individual channel in the "off" position when using it in program mode. I set up the programs and then simply turned on the channels. Well, after a few moments I noticed that my nano tank looked like whole milk, and yanked the plug. My DT's Alkalinity went to over 10dkh, and I managed to do a 90% water change on the Nano making water in about 5 minutes since I had some RODI already made. It has been a few days now, and everything is fine with my Alk back to around 7.5 with no burnt tips, so I dodged a bullet this time. The Jebao seems to work, but it is not very accurate, the instructions suck and the app is very poor, but the price is great and wifi works fine. Since I am dosing ESV, the accuracy is not that important because I am constantly testing and changing the amount I dose as I add corals and as they grow anyway. It has only been a few days, so I will update if my opinion changes.