I'd go ahead and up-pot it. And it looks like a nitrogen deficiency, not cal-mag, to me.
With a calcium deficiency you'll usually get little rust looking spots on the leaves. With nitrogen def, it's a generally yellowing of the lowers since nitrogen is a mobile element that the plant can move around. Starts out as a generally pale green of the lowers and moves to yellow as the plant sucks the nitrogen from them to support the new growth at the top.
Ok, cool, thank you!
Ok, thank you for your earlier advice to cover the worm castings. Those particular Solo cups do not have a lot of room, and I am so busy right now, I don't really have time to mess with it.
I am hoping to straight mix in 15-20% in from now on.
Coot's website is broken right now, but I was on it yesterday, and I think I remember Coot uses 1/3rd worm castings in his base. (And then he adds other things, if I recall.)
Coot's is also one part cspm, and the other part I forget what. Only, while I was letting my first batch of subcool ferment, I tried straight Coots. If I am not mistaken, I believe it was 1/3 wc.
I remember that the flavor experience was so much richer and better than with the chemical nutes I had been using! And it was such a better experience that I was sold on the organic path from then on.
Then the next batch was Subcool in the bottom 1/3 to 1/2 of a 7G cloth pot, with Coot's over the top of that. And I just remember that yeah, it took a while to mix and ferment, but now all you do is add water and you get rich, chocolate-y, frosty buds. And I could not believe the difference in flavor!
I never forgot that.
So I guess if Coots is maybe just less than 1/3 worm castings (if memory serves me correctly), and the upper 1/2 to 2/3 (but usually 2/3) of the pot was filled with Coot's, then is that like 1/3wc x 2/3 = 22.22222%?
So round that down a little, and you get like 20% worm castings for those early pots.
And once we get to our final destination, worm castings should be cheap.
So that is my thinking at the moment, for whatever that is worth.
I think you said you use a much smaller amount, like 5%. Would you want to share your reasoning behind using a much smaller amount (5%)? I am sure you have a lot of other things going on also, but I kind of equate the wc with the rich chocolate-y flavor--is that a mistake?
Or is there better?
('Cuz I know that you know a lot of stuff.)
Thanks.