Any clue what could be causing this?

[ohigrow]

I noticed today on 2 of my plants that they had a few leaves that were turning brown? Any clue what the issue is?

 

[TheGoldenRoad]

 

[TheGoldenRoad]

Need a bit more info. Medium, nutes, environment, so on. A picture of the entire plant will help too.

 

[ohigrow]

Need a bit more info. Medium, nutes, environment, so on. A picture of the entire plant will help too.

I have a diary posted on this grow pictures are pretty up to date. This just popped up kind of over the last day or 2 just on a few of the plants. Soil mix of HF/OF/Perlite. 5x5 grow tent temps 79-81 daytime 68-74 night time humidity between 52-62%. Nutes are fox farms trio but just switched solely to the bloom recently. I’m thinking I may just need to flush to clear out any build up and maybe do a light feeding on them. My meter is broken so can’t measure ppm at the moment unfortunately.

 

[TheGoldenRoad]

I have a diary posted on this grow pictures are pretty up to date. This just popped up kind of over the last day or 2 just on a few of the plants. Soil mix of HF/OF/Perlite. 5x5 grow tent temps 79-81 daytime 68-74 night time humidity between 52-62%. Nutes are fox farms trio but just switched solely to the bloom recently. I’m thinking I may just need to flush to clear out any build up and maybe do a light feeding on them. My meter is broken so can’t measure ppm at the moment unfortunately.

I don’t know how Fox Farm works because I’ve never ran that line. But with the GenHydro trio, you can drop the Grow but you still need the Micro and Bloom for flower.

 

[TheGoldenRoad]

I never dropped the grow from the equation entirely. I just made a severe reduction to .5-.75 ml / gal.

 

[ohigrow]

Here’s better pictures of it and the plant overall

 

[TheGoldenRoad]

Those definitely look hungry to me.

 

[Eledin]

You need to follow the fox farms feeding chart, grow, bloom and tiger bloom are used at the same time at some stages. If youre using only big or tiger bloom more than half of the feeding is missing.

Feeding Schedules - FoxFarm Soil & Fertilizer Company

Choose the feeding schedule that’s right for your growing needs. English (Imperial) Espanol (Metric) English & Espanol (Imperial and Metric) Tiếng Việt (METRIC) Hmoob (Metric)

foxfarm.com

 

[Eledin]

Here’s better pictures of it and the plant overall

Nitrogen deficiency, magnessium deficiency, probably nutes are umbalanced in the soil at this point too. I think doing a flush is a good idea, do you have sledgehammer from fox farms? If not, you can flush with epsom salts. You will need to reintroduce microorganisms and a regular feeding. Flushing in organic is painful, but I think its more painful to have nute umbalance in the soil.

 

[Eledin]

Something important is that you add the nutes right away after flushing. The residual epsom salts should help to absorb them quicker and give you extra magnessium too. Good thing is that youre going with liquid organic ferts, it if was only ammendments you would be kinda fucked. Organic liquid ferts usually have things in them to help absorption even if they still need microorganisms for proper absorption. The proof for that is several plants I burned in the past with just 1 organic liquid fert feeding took only a couple of days.

 

[ohigrow]

I’m working on things now. Doing a flush and adding a nute mix. I followed the chart and did a proper mix but didn’t go full strength so I can see how they react first. I usually do living soil so this has been an adventure haha

 

[RoadKillSkunkHunt]

Look at the picture. See the green foliage further from the light? See the more yellow foliage closer to the light. The plants are praying nicely so its not a watering issue.

What it looks to me is the plants directly under the light are getting too much light. They appear to be much lighter in green than the plants behind them in the back part of the tent. I'd lower light intensity or move the plants out of the hot spots. The ones closest to the light appear to be bleaching.

 

[ohigrow]

Look at the picture. See the green foliage further from the light? See the more yellow foliage closer to the light. The plants are praying nicely so its not a watering issue.

What it looks to me is the plants directly under the light are getting too much light. They appear to be much lighter in green than the plants behind them in the back part of the tent. I'd lower light intensity or move the plants out of the hot spots. The ones closest to the light appear to be bleaching.

I don’t think it’s a light issue. I initially thought that on a previous issue and the light intensity/height has been adjusted. The 2 plants it’s happening on one is the smallest plant in the tent actually so it’s furthest from the light and the other is a medium sized. These are the tops of 2 of the taller plants one is the tallest and they’re not having the issue.

 

[ohigrow]

Update: plants have been flushed and fed. I’ll monitor closely over the next few days for any changes whether bad or good.

 

[RoadKillSkunkHunt]

I don’t think it’s a light issue. I initially thought that on a previous issue and the light intensity/height has been adjusted. The 2 plants it’s happening on one is the smallest plant in the tent actually so it’s furthest from the light and the other is a medium sized. These are the tops of 2 of the taller plants one is the tallest and they’re not having the issue.

It's a bit odd the problem is only effecting the plants closest to the light ... Are they all the same strain?

At any rate, best of luck with your grow.

 

[ohigrow]

It's a bit odd the problem is only effecting the plants closest to the light ... Are they all the same strain?

At any rate, best of luck with your grow.

Different strains and no the affected plants one is furthest from the light and one is about medium distance. It’s not happening on the plants closest to the lights at all.

 

[Grownsince95]

I don’t think it’s a light issue. I initially thought that on a previous issue and the light intensity/height has been adjusted. The 2 plants it’s happening on one is the smallest plant in the tent actually so it’s furthest from the light and the other is a medium sized. These are the tops of 2 of the taller plants one is the tallest and they’re not having the issue.

Your plants were perfectly healthy the first week of May, already in flower and then you lollipop them and 10 days later they show signs of deficiency right as peak flower is starting.

You took away all their reserves. They're stealing back N and P from the leaves that are left. The input (light and growth phase) has outpaced their output (food/health)

If your meter is broken and you don't know your runoff pH or ppm why would you flush plants in peak flower?

 

[Eledin]

Since Im responsable for the advice I gave him I will explain why I would flush, precisely because of this:
"If your meter is broken and you don't know your runoff pH or ppm why would you flush plants in peak flower?"
When you have no idea of what your parameters are, a good restart can save your harvest. Organic liquid fertilizers are absorved quick enough to avoid deficiencies if you flush, specially if you use epsom salts which will wash away nutes when you flush but the epsom salts that remain in the soil will help nutrient uptake.
Now that he restarted his medium, he is certain that they have the correct ratio of nutrients, starting at 1/4 of the strenght perhaps is too little, I would have gone for 1/2 but you can always adjust depending on how they respond even though I agree that being in flower risking low nutrients in the soil after a flush will affect final yield.

 

[Eledin]

Let me go further I think I missuderstood you when you said his ppm meter is broken hence why try to feed them? With a feeding chart, you dont need to meassure ppm in organic really. I would think differently if he was growing hydro. I cant tell when was the last time I meassured my ppm.