I’m pretty much done for now with equipping my tent but I’m always needing other stuff. Like I had to get a ph meter and the other day I needed lime to reuse last year’s soil. But I do recommend this ph meter from @VIVOSUN. I’m very happy with the quality and functionality. CL
look for something with a replaceable tip. the ph bulbs can break or go bad over time. also it's a bit better to keep separate ec and ph meters. the ph meters need to be stored with storage fluid when idle or they will go bad.
the storage fluid for the ph bulb can degrade the electrodes on the ec meter over time, which will also foul the ph bulb if they are part of the same unit.
also it's a pain fiddling around with the multi units to go back and forth between settings to get your readings.