Leaves turning white-ish and then dieing

[Radumanso]

Anyone has any idea what this could look like?
They have proper ph with proper LED lights, they had some stress with transpotting could that be it? I think it's some potassium deficiency so I gave them some food plant with potassium, as you can see the illness starts from the top, I am left clueless, I had so many problems woth this grow.

[D.A.A.S.69]

Morning Rad, they need to be in larger pots soon, like today if possible.
Your gonna have root problems, if not already.

[Radumanso]

The thing is that they have shown some signs of rooting bound about a week ago, so I have doubled the size of the pot and thats about a week ago and since then they have just gotten worse instead of recover, do you think it might be some loghting problem? I had a short vacation (1 night) and I have trusted my girlfriend that she will turn on the lights before she left the house so they had more than 24 hours with no lighting what so ever, and since then the peoblwm just gotten worse, after that thing I have tried to keep them under 24 hours of lighting trying to repair that mistake, maybe they were stressed as fk because of that? As I said they only have 1 week with a bigger pot it seems pretty unbelievable that not even for 1 day they couldn't use that twice bigger space. Sorry for this but I am taking everything in consideration with these little spoiled babies as I said I had loads of problems with them already, fungus gnats, spider mites and high ph already, plus that 24 hours of night couls affected them.

[Qwertywill]

Roots grow extremely fast... next repot use a 3-5 gallon pot or whatever your planning on for its forever home.

[Radumanso]

Hello guys, just done repotting and as I suspected the roots had a lot of space to go further, some of them didn't even get to the soil from the first transpotting and just 3 of them that didn't show any signs of illness actually got further with the roots, the rest of them are just almost the same, the roots looked good, white and fluffy no signs of any problems. So this is definitely excluded.

[Chefbjy]

In pic one I see webbing...did you get rid of your pest problems? Cause pic 2 looks like bug damage to me.

[Radumanso]

Every single bugged has been eliminated just when I first repotted I used pesticides and neem oil as well so everything has gone, that web was just a normal house spider (the one with the long legs amd small body) that I found this morning hideing underneath one of them and I have killed it and resprayed with neem oil this morning in case it was any eggs or larvas but could one house spider do that damage in a few hours? Sorry but it's my second grow and I am not that experienced with these pests that's why I try to keep it under control with neem oil every four-five days.

[Radumanso]

I am thinking maybe a potassium or baron deficiency as all the other options I havr excluded, just made a little research and those daddy long legs spiders don't eat any of the plants. Cheers for your help guys!

[Chefbjy]

Well if you're sure there ain't no bugs. https://www.growweedeasy.com/iron-deficiency-cannabis

Might be caused by your high ph. What are you growing in? Soil? What kind? Are you using nutrients? What kind?

Plants need rest if it's a photoperiod plant I suggest 18/6 light schedule. You don't want intense light on em if they're showing problems...raising the light will help them heal. Correcting ph and using some calmag or supplements that have iron would be my next suggestion if it doesn't resolve itself after following the link I posted. Good luck!!

[Radumanso]

Thank you pal, much appreciated, I have just checked all the links and it looks just like what I have, I grow in a mixed soil, use Baby bio nutrients and the water is from my tap, always check the ph and it's 6.5-6.6 max but usually it's 6.5 after I add the nutes. I will get a probe for the soil to make sure it's not the soil that raises the ph. I have checked even the run out water and it's 6,4 so it's quite fine I think. I will try to let them dry as today I transpotted and had to water a little bit, I will leave it dry and see what happens in these 24 hours, if it's still the same I will go tomorrow and buy something with iron foe their feeding process, the strain it's a White Widow non auto. Thank you very much once again, you are a star!

[Radumanso]

After several researches trough rhe whole internet I finally found the cause, https://www.royalqueenseeds.com/blog...is-plants-n604
My plants show exactly all the symptoms, unfortunately I couldn't find in store so I had to order online and it takes 5 days to come, I hope I will still be able to save most of them as just one hows extremely damage I hope the rest will survive. So guys if you use filtered water and yoir plants show these symptoms you know what it is, it makes sense now why the roots didn't grow almost at all as it's something normal for boron deficiency. Thank you all for support and I hope you will find this helpfull in your cases.