Tiger Stripes on some Leafs

[SeedsWeeds]

Hi guys,

I've noticed one plant had a few dozen tiger stripe style leafs, some of the leafs were more dots than stripes, now my other plants are starting to exhibit the same problem.

I at first thought it was a disease of some sorts, from online reading, but my finger could be that it's a Calcium or Magnesium deficiency maybe?

They're all in air pots, (fabric), in Coco Do it, that has not been treated. For pretty much all of their Veg I only fed them light H&G Coco nutes, and flushed them with water for a week prior to flowering, and now I've bumped up the nutes but for most of their feeds I never gave them anything else other than A and B nutes.

I genuinely can't remember when this started, tho I'm pretty sure one plant got this and a week later some of the other plants have started to develop this, it is not rapid and is not overtaking the plants, though I prefer to remedy this as soon as possible so it doesn't negatively affect the plants.

I have started adding CalMag to each feed, and I plan to flush every third feed. (Feed, feed, flush)

Based off the photo, does anything ring a bell? I understand it is difficult to diagnose issues based off a photo, which is why I'm trying to read my plants and adjust the nutrients accordingly.

Also on a side note, can someone inform me as to why the leafs may start going a shiny dark green colour- I noticed one leaf looking shiny DARK green. Last grow I must have nutrient locked/burnt the plant as the entire plant went dark green and the leafs shrunk in size - let's not have this happen again...

 

[Waira]

...we need more detailed info mate, please look into the highlighted section above here for the patient form; c/p it into here and fill in the details, along with more pics (in normal light, color rendering matters!) of whole plant and a couple close-ups,....
of most importance is the nutrient info, NPK#'s, dosage frequency, and how you're running the coco, drain to waste I assume? How much run-off each time and are you taking ppm/EC and pH reading of solution going in and the run-off?
...deeper greens smack of N toxicity,... patchy larger necrotic spotting looks more P related than Ca, but they can have similar symptoms
... don't remove the leaves, this does more harm than good!
..first thing to figure is if this is a lack-of defc. issue, or a pH/ppm lockout situation,.. coco is not an easy medium to master, lots of do's and don't's, so many try to treat it like a true soil and end up with a shit-show of some kind... it has unique properties that if not dealt with properly will come back to bite,...