TMV or what else?

Hello this is my second thread created on this forum so bare with me.
-2 bag seeds granddaddy purp, from a local dispensary. They are 20 days old.
- 150 watt cfls mixed spectrum
- mg organic soil
- temps are kept at 28degrees
( yes mg sucks , but in toronto its hard to find good soil after the seasons over)
- feeding a basic 20 20 chem fertilizer.
- growing very fast and not having any issue other than the wierd patches of discoloration. I just googled some symptoms and it gave me pictures of TMV, what am i doing wrong. This is my 3rd grow same routine as other grows. Any help is appreciated thank you. Also my ppm readings are pretty low atm, but i dont see any yellowing at the bottom. My last reading was 350ppm.

TMV does not host in cannabis. The pics you are getting from google are mis-diagnosed. Most of those pics are actually broad mite damage.

Thanks for your opinion Bugeye. I thought that might be a possibility before, but i have a lot of green crack seedlings which are in the same environment wouldnt they spread into each others soil? Also can it be just the strain that does that camoflauge design on the leaves? I grew white rhino and revolver ck before and none of them did that.

yeah, that is a deficiency, not a mosaic pattern.

Looks like nute burn starting to me. MG soils are notorious for that and if you're adding more strong nutes like that 20-20-20 I'd have to say that's the problem.

Very dark green foliage, some cupping and discolouration of the leaf edges with browning starting indicates salts build up in the leaves which makes it hard for them to dissipate heat even if the room temps are OK then the burn begins.

I'd look hard for some soilless mix to repot them into larger pots or flush them out with plain water right away to try to reduce the nutes in the soil but those time release nutes in the MG soil are not got rid of easily. If you do just flush then wait until you see some yellowing of the lower and oldest leaves before feeding any nutes.

Nice plants so you don't want them all burnt up.

Hemp Diseases and Pests Management and Biological Control An Advanced Treatise

Always important for noobs to tell the difference, more so if you smoke cigs

good luck

Bugeye said:

TMV does not host in cannabis. The pics you are getting from google are mis-diagnosed. Most of those pics are actually broad mite damage.

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I feel it's not TMV but it is a mosaic virus that you see on the net. I've had it and your plants won't flower.

I see thank you guys for your responses it means a lot. Basically the checked the run off on both plants and the ppm was pretty low and i only been feeding at 1/4 strength per 5 gallons. And i fed them three times now, so can i actually have overfed? What else can you guys suggest.

Georgie i think i made an error because the mosiac does look very similiar, but how did i get that shit and how come the green crack seedlings are looking nice and green that are growing side by side?

vostok said:

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Hemp Diseases and Pests Management and Biological Control An Advanced Treatise

Always important for noobs to tell the difference, more so if you smoke cigs

good luck

Click to expand...

Can you elaborate please btw do you speak russian?