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I thought about thrips, since the leaf's damage does look more like thrips than mites, although the mites are there too, but I have never seen a thrip near the plants, only fungus gnats and spider mites. The dots look to me like fungus spores that I have seen in a close up of powdery...

But what are the black dots?

Plus, it seems to spread from plant to plant. I'll see it starting in one place, and then all the plants around it start to get it.

Regaredless, I'm asking about the black spots, not nutrient problems. They have been flushed and fed only water, and they continue to get worse.

Hi, I seem to be losing my plants about 4 or 5 weeks into flower. I have seen fungus gnats around and have never dealt with any sort of fungus or mold or anything. I think I might have a few different problems going on at once, but I have eliminated it down to these black dots being the main...

Thank you. I do have stand alone air conditioners in each room. It started to show up lightly about 5-6 months ago before I hooked up my ac for the summer though.

The wall is just a part of the cellar that I wasn't allowed to modify, usually I don't put plant's there, but those ones are in quarantine. But ya, a plant outside will recover. The damaged leaves will still be damaged, but all the new growth is vigorous, and so is the old growth that isn't...

Notice the leaves are brown but some of the buds are still green?

Pretty sure it wasn't a bad bag of the frog, since this has slowly developed over time it seems. I just sterilized my whole house, and the temp is a little high, but not ever over 90 during the day or over 50% humidity. I have multiple fans, filters, etc. so air quality is legit. I only spray...

That's why I'm stumped

Here are some more pics of the week sevens with the light off, maybe this will help clear things up that it's not nutes.

Please look at the pictures better. It is not nutes. I have been growing the same strains on the same schedules for a couple years now, I know a nute problem when I see it and this is not a nute problem. I wouldn't be posting here for a nute problem. Nutes do not make a plant brown up and...

There is also little black spots on the top of the leaves that you can't see in the pics.

Let's get away from the nute thing for a minute. I'm thinking fusarium or pythium. Sometimes they just wilt overnight looking like overwatering, but not being overwatered.

All the pictures of the leaves are early stage of it, then the plant almost browns up overnight and then gets worse in the last few weeks. Any plant I have thrown outside has recovered and is looking great though.

I have been watering very lightly for a couple weeks now, thinking it might be nutes. I'm thinking a fungus, as I've spotted some fungus gnats. The pictures under the light are doing it no justice. The plants turn yellowish brown and it's almost like they just commit suicide in week five or...

Soil(happyfrog) Foxfarm nutes (Big Bloom, Grow Big, Tiger Bloom, Open Sesame, Beastie Bloom, Cha-Ching) with some snowstorm, gravity, crystalburst, and roots excel. I use less nutes than the schedules call for. I use the tall boy water filter, but not RO. I have been on the same nutrient...

Hi, I am new here, but I have been growing for a few years now. I don't know what I am dealing with now, and it is just devastating. The plants will be growing fine, and then they start getting these brownish spots and then they wilt and die. If I am lucky enough to get them to finish they...