There's been a new development... Top has completely bent over now. Main cola pictured on page one was horizontal this morning. Rest of plant looks similar to yesterday so hasnt got worse. Maybe I was to rough moving it and its damaged inside.
Will try try get some pics, it was looking better last night, the others are ok really so not all is lost. Just can't see why this one is giving me all the problems.
Its not broke, doesnt look like its rotting. The stem feels like the others, feels quite hard but gives a little when squeezed. Color wise the stem looks the same as the other plants, light green. No previous grows to compare it to tho.
I had tucked it around a tie I was using to support the main stem when I noticed it and when I untucked it then it didn't bend back over. It stayed how it was yesterday. I've tucked it back round for now.
imho, it almost looks like there is too much K which is causing an N toxicity and then like you're watering just a bit too often. definitely go to water only and let her dry out a bit in between. also, you are keeping your 400W about 24" away from the canopy and you could probably get it a few inches closer--lower it a bit and see how that goes; i think my 400 is about 18" from the canopy.
Hmm dunno about the watering to often, I let them dry out quite well. Would moving the light closer not raise temps at canopy? Which then could mess with nutrient intake further? Just going off what I've already read lol, so many different possibilities