Medi-1 wrote:to be honest the only time you would need cal is in coco. our tap has has enough in it, the coco cant process calcium as the others do.... yes you can improve the results by using the additives but it isnt necessary. we are working on an all natural bloom additve to follow. i believe our bio-chemist is working on that now.
you relay dont need others...we have it all in 1 bottle.
Medi-1 I'm not sure about the first part of your post. The minerals that are found in the tap water are not in the same form that the minerals are found in purified nutrients such as cal-mag or whatever. I have very hard water, around 300 ppm straight out of the tap, but most of those ppm's are not able to be uptake by the plant.
The plants don't uptake nearly the amount of calcium or magnesium found in tap water that they need (I'm blabbing about hydro now). I saw an astounding difference with the same plants when I switched to r.o. water and needed to add back in more cal-mag.
I had a very long discussion with a chemist about this, and pretty much the calcium and magnesium found in tap is not the correct form for plants to uptake. They can only uptake very tiny amounts of it, and if you do not supplement back with cal-mag, (at least I find in my area with my strain), they become deficient. In fact, the chemist pointed out to me, that (in my tap water for example), this 300 ppm of 'rogue nutrients' we shall call them, actually interfere with the uptake of other nutrients!!! (bad!)
Have you ever done a nute mix with tap water and noticed precipitate created? I have, many times actually. That is partially the tap water nutrients interacting at a molecular level with the purified nutrients and precipitating them into a solid substance. In other words, the plant can't uptake anymore because the 'chunks' of nutrients are now too large.
What you said earlier that additives are not necessary is true, but again this plant will grow in cracks in the side-walk if we let it! We are trying to get the best of the best out of the plant we possibly can, and that involves filtering with ro and 'adding back' calcium and magnesium. (but its not adding back because again, it wasn't in the correct form for the plants to uptake originally).
I'm sure all of this depends on region as well, but just know where I'm from, ro water make a big positive difference!
This is a point swerve and I slightly disagree on and talk about all the time

And of course the psychedelics are the naturally evolved nano-machinary of the gayain-matrix that knits together this cosmic ecology. -Terence McKenna