New deficiency or toxicity? This is a new one for me.

Hey growing granny! I'm sorry, but I tried doing a diary last grow, and it was simply to much work :( I work 12h days. 5/7. Just enough time to eat something, attend my duties in the garden, and wash myself before going back to work. Weekends are for cleaning and laundry. I simply don't find the energy to update a diary every week. The larvea are under control. They do come back after 3 days after adding h2o2. But my roots stay nice and clean! Mag def should show on the oldest leafs. While this shows more on the top leafs. Also didn't have any mag def since my roots got back better. I added new h2o2 today because I saw the larvea were back. Will see what happens next.

You still dealing with those larvae? Damn! I wish I could help you with the current problem but you haven't started a diary.... so no diary = no information. I'd say you're dealing with some deficiency, probably what you suspect - but as to the remedy, I couldn't help you except to guess that your pH is way out of range and the plant can't get at the magnesium that is in your nutes (if you're using nutes!). Start a diary... truly, mate, it help US help YOU!

@ezzjaybruh Could be it. The coloration is a little different. But I see that in a lot of photo's it also has half of the leafs effected. The plants all came from seeds, so have different genetics. Should I remove this plant. Just in case? I just fucking switched them to flower yesterday. I saw another plant with some new leafs that have some deformation. No coloration tho. And that plant is multiple plants away from the one I posted about

This is more than likely a mosaic virus. Was thinking maybe in the first few pics.. but the last couple show it. When you have that look on one side of the midrib- and not on the other side - so stark like that.. it’s usually mosaic virus . Specifically usually tobacco mosaic virus.. Google “tobacco mosaic virus cannabis” and check images .. you’ll likely agree