HELP! Need HELP with this plant!!

[Thomass911]

So about 3 days ago these brown spots started forming on some of my top leaves. I should also tell you i set my lights to 12-12 about a week ago. Im growing in fox farm soil and have fed fox farm big bloom one time when switching light cycle and only fed about 1/4 of the recommended dose as this plant has been very sensitive to nutrients since the beginning. But if anyone has any help or remedies for these spots that would be greatly appreciated! First post here. P.s. I just did a 6.8ph watering this morning. No nutrients.

 

[alltatup]

I can't see anything clearly in that light. It's probably a pH problem...

 

[Thomass911]

I took many pictures all in different lighting. You see the brown spots on the leaves?

 

[JDU]

Natural lighting please.
But in the 2nd pic- in the upper right hand- there is a leaf that is curled under & very thin..... Suggests root or ph issues.

 

[Thomass911]

Here is better lighting, thanks for your replies!

 

[JDU]

Much better.
Yeah it looks like the same ph shit I'm goin through. I flushed good with ph'd unsulfered molasses last time & they perked right up but aren't quite on the straight n narrow yet. I plan on doin again when they're ready for another feeding. Big overflow- git the stagnant shit around the tap root moving & let it dry out between waterings

 

[Thomass911]

Interesting, never heard of using unsulfured molasses in a flush.. what are the measurements of molasses to water you use to do that?

 

[JDU]

2 or 3 Tbs to a gal of water. Dont forgit the cal mag.
Epson salt makes for a good flush too.

 

[Tersky]

Looks like a cal mag issue to me. Possibly brought on by ph issue or not enough cal mag in nutes.

 

[CaptainWiese91]

Ca mag is my suggestion too. And it could also just be a Ph issue and this is why it won’t take up the cal mag👍🏻

 

[Willyd]

is it just me or can you see wpm on some of those leaves

 

[SoOrbudgal]

Willyd good eye around the edges soft white wonder how thick it is in his tent? Maybe some defoliation would be in order.

 

[Willyd]

and some fresh air moving

 

[Thomass911]

So PH is spot on.. runoff is good as well, i did a major defoliation and have more air moving.. i have a few new pics of current leaves, i did have thrips shortly but i seemed to have gotten rid of them quite well with neem oil and sevin powder. I dont understand why the bottom leaves look like this.. in pics, white stuff on leaves is sevin powder btw. Any suggestions?

 

[Thomass911]

Yes sorry I shouldve mentioned.. i did use a bit of sevin dust for an early catch of thrips

 

[SoOrbudgal]

I think it was nute overload reaction on leaf? my 2 cents.

 

[Thomass911]

I seriously dont use nutes barely at all, its not that because i had 3 plants 2 pretty much dried up in a matter of 3 days and now its happening to this plant which is my last, i have no idea what to do. Ive tried neem oil for pests, sevin dust for pests, i tried flushing with molasses. But i dont know why they are drying up and becomming crispy