Yellow leaves

Hello fellow growers,

I am having some problems with my crop and must look to others for help.

I am running airoponics using a bucket system under a 1000 watt lamp.

This is my second crop and I am getting the same problems I had with the first crop. At first I thought it was toxic salt buildup due to improper flushing, then I realized it must be nutrient deficiency due to pH levels being out of the proper range for an extended period of time.

In the first photo, you can see a distant shot, which shows how the leaves on the plants directly under the light suffer the worst and are the most yellow, and leaves farthest from the light are still green and look very healthy

the drastic difference between these leaves makes it hard to ignore the obvious influence the light is having in our problem, but I don't discard the idea that it is a side effect of a large underlying problem in my methodology.

Other photos show close ups of the dying leaves.

My questions are: Does the light have anything to do with my problem? or is it simply nutrient lock out?

Megrowtosmoke said:

Hello fellow growers,

I am having some problems with my crop and must look to others for help.

I am running airoponics using a bucket system under a 1000 watt lamp.

This is my second crop and I am getting the same problems I had with the first crop. At first I thought it was toxic salt buildup due to improper flushing, then I realized it must be nutrient deficiency due to pH levels being out of the proper range for an extended period of time.

In the first photo, you can see a distant shot, which shows how the leaves on the plants directly under the light suffer the worst and are the most yellow, and leaves farthest from the light are still green and look very healthy

the drastic difference between these leaves makes it hard to ignore the obvious influence the light is having in our problem, but I don't discard the idea that it is a side effect of a large underlying problem in my methodology.

Other photos show close ups of the dying leaves.

My questions are: Does the light have anything to do with my problem? or is it simply nutrient lock out?

Click to expand...

I'm no pro but i can tell you that when going hydro you're set up needs to be perfected to a tee. It seems you definitely need to adjust your light, your stems are extremely thin, this could be because lack of air circulation(put a fan in their exercise those lady's. Yes they do look a bit nutrient deficient. I found it easier to grow in Soil. I'm interested in seeing what the experts have to say. I could be completely wrong. Make sure if you're using tap water to let it sit out for 24 hours. You could easily be killing them with chlorine

Thanks for the reply. I think I'm going to try a growing medium with my next crop. this airoponics is too complicated for now.

I do have plenty of air circulation, and I'm using purified water..

I'm also wondering how much of the dying leaves I should prune off at a time. I read that cutting 20 percent of the leaves during vegitative growth stresses the plant. I imagine that this also applies to flowering plants. But this conflicts with the fact that one should prune a leaf it is more than 50% dead. Since so many of my leaves are dead, how should I go about pruning them up?

It's pbobably not deficent,but hows your ph&ppm look?They look like they are in nute overload,not deficient,as the leaves turn down when lacking in nutrients usually.

like the first replier said if your going hydro or aero you really need to know your stuff and have everything set up and ready to go... the easiest thing to do is put them in the ground, honestly. they love it and you really cant fuck up. whereas it is super easy to fuck your plants up indoors period. let alone hydro or aero. so i never do that stuff. if i was to grow indoors i'd definetly just put them in 5 gal pots with some Foxfarm soil. but anyways like i said I really dont know what your doing wrong here as ive never grown using aero setups. but from what i can see your plants look pretty un-salvagable .. i would start over with some quality seeds and potting soil

I have to agree with non phixion, and the guys at the greenhouse here say "better luck next time,that crop is done."too bad too,you had some big girls.

some of the pics they look like there burnt from heat.. how hot is it in your room??
humidity??

So I trashed them and the buckets and here is my theory: toxic salt build up from stagnant water in buckets. I made the buckets myself and my room isn't level. Also, the roots were growing into the draining tubes so some of the plants were just sitting in the solution.

But why did the ones nearest to the light look so obviously affected by it? I think this is because my buckets where white and too much light was getting in to the roots. Roots need darkness, so I think this combined with the toxicity killed my poor babies.

So I had been vegging in one of those typical airoponics devices that I learned how to build from that "harvest a pound every three weeks" article in hightimes. I was then moving them to the bucket system in the flower room. I have since scrapped that system and just moved the veg unit into the flower room. More just to continue the airoponics experiment than anything else. But this time I won't be so invested; only a couple plants...

I'm going soil for the rest.

Nonphixion - any tips for going to soil? Should I transplant from these little veg pots straight into the 5 Gal pots when I'm ready to flower? Or will I need some 1 gal pots for the later part of their vegetative growth?