I was going to start a thread designated specifically for cannabis-related definitions and acronyms explained but I wasn't sure where to post it so I asked Teddy but then I decided it was a bigger task than maybe I wanted so I didn't bother. I still think it's a good idea but when I feel like it, I have an Excel spreadsheet started with the ones that I learn like PM and WPM, for example.
I'll send you a message with some links. If you'd like, you can incorporate some of the information contained within those pages into your file, maybe have someone look at it if/when you get it to the point where you feel like posting it. I haven't even visited the webpages, though, so cannot guarantee the accuracy of the information. I thought someone had started such a thread here ten years ago, but just did a site search and couldn't find it.
If the meter doesn't show 1.2 EC, what do I do then?
If it's too low, add more of what you put into the water, at the same ratio. If it's too high, add more water. (If you're not using distilled or other zero-content water, that'll add something, too - but it'll be less than that what you're adding it to.)
Does EC mean "electrical conductivity"?
Yes. You can measure EC of a solution with a DVOM (digital volt / ohm meter), although it's a bit of a PITA.
one more thing, just to confirm, I don't need to pH the water, right?
Add everything to the water that you intend to add (with the exception of a pH adjuster, of course). Check the solution's pH. Adjust if necessary. If you're not starting with zero-content water, you might check its EC before adding anything to it, because if it contains something that increases its EC, that's going to affect the EC reading you get after you've added your nutrients/supplements and skew the number a bit (meaning it'll not match what a manufacturer's chart leads you to expect).
BtW, I'm currently rereading one of the late Andre Norton's books,
Time Traders. It contains two novels that were originally published in 1958 and 1959. It's quite unusual for me to read a novel more than once, but I was seven or eight when I originally read them, and that was over 40 years ago, so... <SHRUGS>. The woman was a prolific author, and wrote science fiction, fantasy, crime fiction, romantic fiction, historical fiction, and possibly other genres. I think she wrote 170 books. Her first one was published in 1934 (although she had written it earlier, while still in high school), and she continued to write until 2005, when she died, at the age of 93. In other words, her literary career spanned more than
70 years! I was impressed by the fact that a novel published 62 years ago didn't really seem dated. Especially a
science fiction novel. While parts of the story take place far in the past, the "base" time is set in the 21
st century - and was written before the first moon landing - yet she still nailed the "...and then never went back" thing that, as of today (also in the 21
st century)... remains accurate
.
. No damage done!
.
If I have any issues with advice given, I will let you know. 
