Burnt hairs

Since I don’t know your pot size, ppm your feeding, and plant size . . . I am assuming you are asking a more general question.

Plant size and total ppm (water ppm counts here) go together. You can find cannabis that needs almost no feedings and another might do better with a LOT more food. So I hope to learn to see what the plants wants. My current problem is that I have helped with organic outside grows in the hills of Arkansas, but not sure how to do that inside. If I make it thru current grow and stay organic, I will try organic again but in 10gal pots. If I don’t make it to the end without staying organic I will do both next time.

The person in charge of the Arkansas grow was insistent that the organic grows were better than the more traditional chem nutrients. I could never tell the difference, but organic is a lot less work.

I think most people should learn to read the plants and only feed for a reason otherwise cal mag if your water is low on that stuff switch to mag sulfur (not all at once) during flower and only water when dry. With practice you get better at all this stuff. Are you following the book from this web site? That will work, but plant size determine ppm not age and different plants need to different amounts so fine tuning is always needed.

Organic is harder in the sense that I need to up my fast release organic nutrients skills.

Most people water and feed too much try to make sure you don’t fall down that rabbit hole. Under feeding is always easier to fix than all the weird stuff that can go wrong if you over do it. It is easy to find self proclaimed experts that don’t under stand their own nutrients. I Just saw one on YouTube their water is around 300 ppm and then they add 300 ppm of nutrients on top of that and feed it to a plant that is so small it would have trouble with their tap water alone. They needed to at least buy distilled water for feed days. Even A decent water filter will save that guys grow.

Mr Grow It has a couple of YouTube channels. Check out garden talk episode 5. Don’t just watch this one - follow the links to welcome to the grow tent you tube stuff. His advice made sense to me. I am trying to grow organic and he isn’t, but he won’t try to sell you a new light or other equipment. If he doesn’t work for you watch a bunch of mr grow it stuff - most of the peeps he interviews have been growing for over a decade. One should make sense to you - there really are more ways to grow cannabis than there are growers.

Sorry for the typos using my phone and have nerve damage in my hands.

The first plant is getting by far the p

most wind. I am sure i could find some wind damage on it.

I agree don’t try to chase vpd without researching it first. The only reason I have a co2 source in my tent is so the fan only has to run to control humidity.

ok here are my two plants the first one started life stunted with the same leaf stress. I need to own that by my estimates I have made at least 6 newbie errors in this grow. The trick to fixing it was to put in a much lower light part of the tent, move the light up and turn it down to 50% i also stopped over watering.

This second one was my largest plant for awhile but now number 2 (not shown) is doing better and not showing phos problems.

My light is 30 something inches from the top of this plant and set around 80%. I will go to 90% in a few weeks

I expect this super silver habe

least 12 weeks in flower and I will be at 100% by the end. The plants will grow up into it a bit.

Tonite when my plants wake up. I will take a couple of pics. My two worse plants. The smaller one got stunted doing almost the exact same setup as this. Same light close to the same co2 etc. I have since started healing it up and it is covered in flowers, but it is stunted. I was home so I lowered the light and chased vpd for about a week. The vpd is too hard to maintain without the right equipmen, but that week brought said plant back from looking stressed and it started growing again.

Turn the fans so they face the wall. You will have plenty of air flow but this will lower the intensity. Check out some YouTube videos by welcome to the grow tent or the grow boss or . . . there is a bunch more. All of those guys will tell you yo use less light at least for awhile. I get the co2 comments and normally this would be right but your plant leafs are showing signs of stress. Lowering the light will give them time to heal.

Just to make sure, you aren't foliar feeding or anything right?

I am thinking that if you think you are about to lose a bunch of buds - the first thing to do is turn the lights down. There is always a bunch of factors going on at once. Remember that plants in the wild don’t have all the light all the time. They get breaks here and there via cloudy days. If nothing else turning the lights down will give you time to figure out what is going on.

No 900 is great, but only if everything else is good. This happened before how bad did it get last time?

I am starting to think that when you have that mag deficit look up high like your showing - than It’s too much light - a couple of days with the light higher and turned down should only mimic a couple of cloudy days. Then leave the light up high but slowly turn up the power level 10% at a time until and go back down if the problem continues.

So research light too high in cannabis plants.

I am also using the sf4000 and found the light can be too strong up close and turned all the way up.

I am so new to this that I am afraid to give advice. So let’s call this stuff to think about.

Light at least 2 inches too close

What size pot is this plant in? Have you underwatered in the last week or so?

If the tip burn spreads up the edge of the leaf, too many nuts - which I am sure you know.

Otherwise a watering issue on a plant that is being pushed hard by a lot of light.

Looks like your plants are deficient in magnesium. I'd guess it's a mixture of that and wind burn possibly.