need some advice... these are clones and S1 in soil using 700-1400ppm blooming mix, using natural sunshine as my lite source... i have 1 genetic that shows more than others, then again some of the other genetics have not shown anything, its mainly located at the lower end.... hoping it won't spread. temp and humidity could get very high in this region too. along the veins it will develop yellowing dots then travels along all the attaching veins and eventually them dots outer ring turns rusty...almost like a reverse mg def.

siam

Im wondering if it could be the first stage of N def, cannot think what else it could be.

Due to the even spotting along the veins Iwould say you have some sort of infection.

Can you have a look under the leaves, can you see any black spots that are moving - you may need a magnifying glass.

You might have spider mites.

What kind of compost have you got them in?

How often are you feeding them with the 1400ppm?

That is quite high every feed for young cuttings in soil.

my mate had the same prob a few weeks ago. spots appearing along the veins, his were clones from a friend as well.

he`s not on the net and from i had seen on here i thought it might be LSF, printed off a copy of the garlic spray someone suggested to keep it at bay and told him to try that.

he gave them a couple of sprays with it (it got worse and def looked like LSF before it got better) and now there looking very healthy. all green no spots.

dont know if LSF with the spotty veins at start was a correct quess or if the garlic was the fixer.

but there better.

Looks fungal to me. My lsf always started on the veins

Yeah, does look fungal.

It may be leaf spot fungus - LSF.

Goto the thread by Felix on trichoderma. In that thread he talks about 'Essence' - a product a member webby is selling.

It apparently gets rid of leaf spot fungus.
look here

How much is the essence?

Is it available over the counter?

Regards

Itchy