At some point you're going to need to supplement your macros so try to locate the following products;
Calcium Nitrate
That seems to be a good product for gardeners who use coco coir as their substrate, to use after initially hydrating/rinsing/rinsing/rinsing the coir, as a pre-soak. The calcium ions are supposed to replace the sodium/potassium(?). ions that the stuff tends to arrive loaded with. Appears to help keep the medium from "stealing calcium," so to speak.
Or... something like that, IDK. It's cheap, too. I think I paid $4.99(US) for either a five- or ten-pound sack of the stuff at the end of my local gardening season a couple years ago. Since it's a dry nutrient, that's all product - IOW, no "water weight" - and it's quite stable in storage (like they always say, "Keep your powder dry,"
).
I suddenly remembered that I had bookmarked a link to a dry nutrient supplier a while back.
So I hunted it down, visited the website - and on the right side of the screen, under "Important Links," saw that there is a link to the Hydrobuddy application, lol. Also an online nutrient calculator webpage written by Jorge Menendez years ago. And a link to the Salt Smarts webpage, which is another online calculator gizmo that appears to be a little more ("Stats: There are 73 users that have stored 12 Water Source Profiles, have created 27 Fertilizer Profiles, tracked over 140 revisions to those profiles, all sharing a database with 44 different salts.") IDK, haven't had time to do more than just glance at the various main webpages for a few seconds each and thing, "Wow, there are tools all over the Internet for creating one's own plant nutrient recipes."
Random useless factoid #137,492: I just calculated it, and my 39"x39"
Mars-Hydro grow tent's area is 0.0242482% of an acre
. So every time I see a bag of {something} that states it'll treat an acre, I know that it'll last...
a while. (Especially since the entire tent isn't covered with growing medium.)
My yard is a quarter-acre. Which always seems small, until I get behind on the mowing. I wonder how much fluoride it'd take to hose it all down? My buddy used to write messages in people's lawns with a solution of the stuff in a pump-up sprayer - and the messages would be there for the rest of the year <insert mad scientist cackle here>.