I want to start saying thanks to those who tried helping me, but I have a K deficient thumb and realize I will never be able to grow any plant in my life.
Today I'm chopping down my 420fastbuds autoflower. Growth has been stunted for a week now. I made a bunch of mistakes my first grow and corrected nearly all my mistakes with this second grow, but somehow it ended up... worse.
My first grow produced buds, but the autoflower giant (Big Bertha I called her) ended up 5' tall getting scorched by my 315 LEC. She may have also been over fed (full Lucas formula 0-8-16) since she was drinking so much from the intense light. I got A LOT of extracts off her to supply me for a long time so at least it wasn't a complete waste.
This second grow I ended up end gradually raising the nutrients to full lucas of 0-5-10 which she is at right now at ~600ppm being full week 5 today. Also bought a fancy HTG LED light to help me control light intensity and gives me more head room in case she turns into another giant. I also have a fancy ph meter along with a cheap one calibrated with all the nice calibration liquids. She has been sitting at 5.9 the whole time. Temperature has been 72-74 during the day and 68 at night. 40% humidity and the root appear to look great besides the discoloring that GH nutrients do to the roots.
Everyone says "ph issues" but sadly that is far from what is wrong. Being an analytical person, when I dial in the specifications needed to grow in DWC and things go south, I just have to give up. There is nothing else I can do, lucas formula works for people so I know its not that, GH nutrients work for people, so I know its not that. My only option would be to do something that is out of specifications which wouldn't make much sense.
Maybe I live in an area which a strong magnetic field, or maybe prone to solar flares. or maybe the stars awkwardly align in a way that makes plants unable to grow (which would explain all my grass and trees in my yard. Used RO water with calmag the whole time, so I know its not my water supply.
Sorry for the rant, mainly just here to say thanks, and that this community seems alright, it's just not for me. Pictures are before being chopped (Day 33). They looked like this for a week with no change even though they are drinking about a quarter gallon and the ppms drop maybe 30ppm a day. Looking at Growdiaries, even soil grow of this same strain had flowers at this point.
Anyone want a HTG LED light or a LEC? I'll give them away cheap (at least pay more than it cost to ship them).