some type of deficiency?

[Roger A. Shrubber]

That isn't true. Especially in Coco-based mediums. Calcium, maybe not as much, but Magnesium? You're way off.

However, you are right about too much CalMag. It can cause lockout. What is it? Potassium? Nitrogen? I forget.

calcium, magnesium, and potassium are part of a triangle, change one and the other two do weird stuff

 

[Olive Drab Green]

calcium, magnesium, and potassium are part of a triangle, change one and the other two do weird stuff

Right, too much of one, lock out the other. My argument was just that you do occasionally have to give Ca and Mg in Veg.

 

[Roger A. Shrubber]

you do, and it depends on the medium how much, soil just needs a little usually, hydro a little more, and coco takes a load in veg, which it will release back into the soil later, which can cause other problems if you aren't aware its coming

 

[Olive Drab Green]

you do, and it depends on the medium how much, soil just needs a little usually, hydro a little more, and coco takes a load in veg, which it will release back into the soil later, which can cause other problems if you aren't aware its coming

Coco was what I thought of immediately.

 

[MichiganMedGrower]

I have seen similar. I had a manganese deficiency recently that made yellow spots like his and then actual pin holes formed and the leaf started to perforate. Too much mag for a minute. Locks out stuff. We don't know what is happening exactly and it doesn't matter if a mild flush works.

But combination immobile nute deficiency can look like that.

I looked so hard and often for bugs it made me sick. There was only the mn deficiency.

 

[billy324]

I'm damn near positive that's an infestation. There's a chance it might be something else, but judging from the lack of rust color in the dispersion pattern, I don't think it has to do with Mg or Ca.

That's the thing the spots start out light that way and then progress to a rust color

 

[Olive Drab Green]

That's the thing the spots start out light that way and then progress to a rust color

Pretty sure that isn't what's going on. Didn't you even say you went heavy on the CalMag? Because you wouldn't be having a Calcium deficiency if so.

 

[billy324]

Wait.. I see splash. Did you foliar feed with the light on? If so, I think you lens'd it. Maybe with a

Pretty sure that isn't what's going on. Didn't you even say you went heavy on the CalMag? Because you wouldn't be having a Calcium deficiency if so.

Yes I went heavy during veg now 11 days into flower I'm seeing this

 

[billy324]

Yes I went heavy during veg now 11 days into flower I'm seeing this

 

[billy324]

Wait.. I see splash. Did you foliar feed with the light on? If so, I think you lens'd it. Maybe with a spray bottle?

You may be on to something....I sprayed them with spinosad when I put them in flower as a preventive measure. they were under the lights while still wet. although I've done it that way several times without seeing this happen

 

[Olive Drab Green]

You may be on to something....I sprayed them with spinosad when I put them in flower as a preventive measure. they were under the lights while still wet

I suspect it's possibly that.