Spots on upper leaf or two of one plant

[Ralphie]

have quite a few plants vegging in dwc and only 2 leaves on 1 plant are showing discoloration

Light is far off, blue lab reading ppm around 450 , 5.8 ph, no other plants showing Any symptoms (that I can see)

Hoping it’s not pest. Anyone have any ideas ?

 

[josh5794]

To be honest I wouldn’t worry yet they look overall healthy just keep eye on it

 

[Ralphie]

Yes that was my first instinct

Then I smoked and started thinking lol if I thought it was nute relqted I would be a little less concerned as most seem ok I’m just trying to rule out it’s not any kind of pest that I can combat now

 

[josh5794]

I think you’ll be good bro don’t panic I always have random leaf that’s throws a wobbly but 9times out of ten it’s all good

 

[Ralphie]

Thanks man for the confidence was just praying for no pests I’ve been very clean and I couldn’t imagine how I would’ve let anything in the garden

 

[Ralphie]

rather then start a new thread,ill continue here, now a number more of my plants are showing this discoloring / spotting on the larger fan leaves. If you take a quick glance at the plants they look great, but at closer look, these are starting to appear

I am almost 4 weeks in from seed (26 days or so)

 

[josh5794]

I’d lean towards to much feed what’s the ppm

 

[Ralphie]

I’d lean towards to much feed what’s the ppm

450 PPM on EC X 500 (so EC is .9)

Ph is a very steady 5.8 - nutes are cultured solutions veg a / b / calmag / uc roots

its happening on a few diff strains and phenos, also mainly the larger fan leaves

 

[josh5794]

I wouldn’t use calmag in hydro mate not saying that’s the problem but shouldn’t need it

 

[Ralphie]

I wouldn’t use calmag in hydro mate not saying that’s the problem but shouldn’t need it

Im using filtered water, hence the calmag

 

[josh5794]

Ok fair play mate they getting good light source ?

 

[Ralphie]

yes, 350 true watt led in 2x3 area, 36 inches away, room temps hi 70s low 80s, resv temps 67-70

 

[josh5794]

Ok long shot but put the light up another foot and half it might be to strong for them I’ve had this before

 

[Ralphie]

I find it odd that they would be fine with the light at that distance for weeks and all of the sudden as they get older not want it, but anythings possible

Anybody else have any insight?

EDIT (Ill also add that its pretty tight in there and some of these leaves are under other leaves, far from getting blasted by light)

 

[josh5794]

I’m sorry I can’t input more I also grow in hydro but I can’t see any other things if you say everything else is good I wish I could see them in person ! Here is my grow my lights are quite a distance https://www.rollitup.org/t/nft-lsd-grow-with-cob.975936/

 

[josh5794]

Have you looked at the roots ?

 

[Ralphie]

yes everyday, white and healthy, solution is also clear

 

[Ralphie]

Attached are some more pics

As shown the very top leaves seem fine, but the larger fan leaves below are affected

 

[eminiplayer]

How much calmag are you using? What brand? How many ppm? Looks like calcium deficiency to me.

 

[rob333]

have quite a few plants vegging in dwc and only 2 leaves on 1 plant are showing discoloration

Light is far off, blue lab reading ppm around 450 , 5.8 ph, no other plants showing Any symptoms (that I can see)

Hoping it’s not pest. Anyone have any ideas ?

thats the start of a ph imbalance