Deficiency or toxicity

Looks awesome man, great job.

Your ppm is wayyy to high. Should be half that... also you light is to close by the looks of things as well. Not sure exactly what that light is, but it looks intense that close to the plant. Cheers 💨

I know people will tzll you its magnesium ... plants with a phosporus deficiency happy growing friend

Seemed like either something is blocking your phosporus or there is phosphorus defieciency. Likely candidates are too much iron, too much zinc, off pH, or wierd fertilizer.

Your ec is to high for veg now. Lower it down to 8 to 900 max. Plain water until you get the built up salt out of the coco. Cheers

Well...first the purple traits are genetic expression so no worries there. Second, the plants looks as if the substrate is damp, so make sure you alternate dry/wet. This dampness in junction with nutrients lead to burns. Do you have any kind of small ventilator in there? The air needs to move if only a little. Also, every third watering should be only water. So try a little dry spell if the dampness is the case, then only water and take it from there. All the best!

Hello first of all thats a beautiful plant well done :) Stems that are red or purple can be a couple of things it can be a defienacny in phosphourous though thats probably not the case. The veins you see is actully a good sign its the plant giving you a visual signal that she is getting the nutes up and down her stem. no if its the leaf stems that are going purple I can pretty much guarentee thats a light issue. Are the leaf stems that are not in direct contact with light green ? If so dont worry at all its compleatly normal and the plants defense mechinism when dealing with intense light or heat its adding pigmentation to better handle the direct light or heat. So nothing to worry about my friend. Now the slight discouleration of your leaves I would guess to be a cal mag defiency but this is just a wild guess.