A good soil mix comes with a little experience is all, and it sounds like you already got your experience, although ots bad experience it just helps you learn. Im really proud of my last mix, only becuase my last two were pretty awful haha.
Do you just grow them out in the open with sunlight? Do you have a tent or an enclosure? I think i missed that part.... A steady RH is easier to keep with an enclosure and a hygrometer. Not sure if you have one of those? Important tool.
I use a cold air humidifier in my room when my rh drops too low. Its true having lower RH in flower will help prevent PM and moldy buds. But earlier in veg they love high humidity and grow faster with it i believe. Right now mines about 40% in my flower room and everything feels happy. Although. I heard if it drops too low it can slow growth. So theres a middle ground there imo.
Id take the advice given. Up the strength of the nutes. Maybe even find some more things to add that will help growth and production like algae or sea kelp, molasses... Cal mag...etc...200 300 ppm seems low for that stage of its life. Your obviously not burning the plant. Which is actually hard to do with
bio bizz and most organic ferts. Burning seems to happen faster to those using chems nutes, or so ive read. So up the dosage. And start doing it twice a week maybe. Green these girls up.
Couple people above mentioned before, and i 100% agree. Those plants look beautiful, and youve done a great job imo. So just experiement. And have fun. Thats what i do, i love my plants, and i can tell you do too. Here check my girls out, proud of em
This is my very first crop so judge lightly please lol, just learnin.
They are about 27 days in flower in this photo, im pumping them full of 750-800 ppms of
Bio bizz, roots organic P supplement, and a 6 bottle line from
nectar for the gods and they are loving every second of it. I bet your plant can handle a lot more than you realize!
Hope i helped in some sort of way, just my stoney two cents haha. Positivity and respect fellow grower. Keep doing the damn thing, hope to see some more posts of your grow going better. Just dont give up. No worries!
Edited to: not sound like a retard