Hello guys! im using a simple DRWC system for my plant, and i few months ago i had a lot of problems measuring the "EC" of my solution because a lack of knowledge about that, until today i was using a really cheap EC metter ( the first one on the photos ), the measure of that metter is on "PPM" parts per million, so i was using from 300 PPM to 1000 APROX, based on the table on the second image, now i have a new EC metter ( Milwaukee EC60 ), i can use it on PPT or EC, of course i dont want to mess up my plant, so Its better to use it on PPT, or can i use it on EC, as far as i can see the EC its universal, but the PPM and PPT of course are not the same number, what would be the better ?
Thanks in advance.
Thanks in advance.