What IS this? I've tried EVERYTHING! Help! (Pics)

[agentsmiley777]

Ok, here's the deal. These plants (Big Bud) have been vegging from clones for about 5 weeks. Here is all the information:

Medium: Hydroton (hydroponic)
Strain: Big Bud (and The Purps)
Nutrients: Canna Aqua Vega A,B. CalMag. Rhizotonic. Cannazyme.
pH: 5.8-6.0
PPM: 700
Water Temp: 67 Degrees
Room Temp: 74 Degrees
Lighting: 2x400 Watt Metal Halide (Air Cooled)
Light Distance: 2 ft.
Humidity: 55-60%
Ventillation: Very good (6" Vortex)

Here's what we've done to fix the problem: Added CalMag. Moved lights further away. Flushed medium with RH water.

Weird thing is, The Purps are growing in the same system, and they have ZERO problems. They are perfect, and are about twice as thick as these Big Buds.

What is this? The new-medium age leafs curl upwards (on the edges), they turn darkish gray (some), bumpy ridges/veins, slow growth. The new leafs start out green, and then once they develop, they begin to show these problems.

Help me out! Thanks.

 

[MynameStitch]

Your problem will not be fixed, but you can try to find a range for it, the plants are different strains and different strains growing in the same system is not a good idea unless you know they can grow together. Each strain has a different tolerance to growing conditions.

But yes, your problem you fixed, 2 feet away is still close, they are still showing dry heat even if it's air cooled, the lumens is causing them to dry out with them being so close.

Move it up a little more.
If the cal mag does not resolve the problem, try adding some iron, cause normally magnesium does not affect the area on tops, but it does happen when they are in flowering. Also the plants are showing some nutrient burn, I would ease up on the nutrients.

WHat is the ppms of your setup?
WHat color are the roots? I have seen this problem before, the rizotonic, you can use it, but I would not use it for now until the plants recover, it seems when it is used a lot it causes these problems, seen it a lot recently. If you don't want to stop using it, at least cut back on the dosage a lot.
WHen was the last time you cleaned out your system?

 

[agentsmiley777]

Anything else?

I cleaned out my system 2 days ago. The PPMs are at about 650 right now. Roots are pearly white.

 

[MynameStitch]

I already told you what your problem was... did you read my entire post?

 

[agentsmiley777]

Yep, and they look the same to worse.

 

[MynameStitch]

Did you do what I had you do? Damaged leaves won't recover, your problem i the lights are being kept too close, move the lights up, simple as that. If they are still having the problem then move the lights up more.

How far away do you have your lights?

 

[agentsmiley777]

2.7 ft.

 

[MynameStitch]

Dude, move it up to about 3 1/2 to 4 feet. I told you to move up the light and you barely moved it up, from 2 feet to 2.7 feet..... that does not make a difference period. Need to move up a lot higher man......

 

[Guest]

You want the lights 4 feet away in veg? Should be like 2.5 feet max, otherwise use use CFLs. Sounds like some whack information.

 

[sirgrassalot]

You want the lights 4 feet away in veg? Should be like 2.5 feet max, otherwise use use CFLs. Sounds like some whack information.

Unbelievable Eh.

 

[MynameStitch]

I said 3 1/2 feet to 4 feet, if his plants are still getting heat stress and moving it 1 more inch is not going to hurt them. You want good yield or bad yield? You have heat stress on leaves it will not only fry the leaves but also the buds when in flowering. it's not wack information either. Wtf would I be telling someone bullshit for?

 

[Americangrower]

Well if you won't listen to Stitch then maybe I can help ..

Anyhow.. You are using 2 MH.... MH throw lots of heat if they aren't sealed units that vent out of grow area......In VEG you don't need intense light....so raise them up to 3.5 to 4'

 

[oldtoker]

its about 45 degrees outside today in the room with my mh its still easily 90 degrees if i dont have ventilation, obviousley alot of heat gets put out by are lights.... air cooled lights are great but put ur hand on top of plant,feel the radiation of heat??? heat doesnt make the plant grow faster light does remmber? these guys arent trying to steer you wrong man with the suggestion of bumping the light a lil further away. it does also look overfed sorta for my tastes. whats up with the other plants in there are they doing good? is just the purps being effected that way?

stifler's mom
honestly i think we are here to help whats your contribution to this?

 

[Stoned Cold]

stifler's mom
honestly i think we are here to help whats your contribution to this?

I think he was just pointing out that the reason the SUN doesnt grow decent plants is cause of how far away it is, right?.....LMAO!....Learn first, then teach

 

[sirgrassalot]

I can put seedlings 8" away from my A/C 400 MH Older flowering plants touch the glass at times. Brand new bulb. I have plenty of fresh air. All relative to the grow I would think. 4' is a little much I think but he'll find the sweet spot.

 

[agentsmiley777]

The lights are at about 32" away, and they are in air-cooled hoods. There is only intense heat for about 4" away from the glass, and nothing down where the plants are.

 

[Stoned Cold]

The lights are at about 32" away, and they are in air-cooled hoods. There is only intense heat for about 4" away from the glass, and nothing down where the plants are.

.......32'' is less than 4' (atleast where I come from!).....LMAO!

 

[agentsmiley777]

.......32'' is less than 4' (atleast where I come from!).....LMAO!

the purps also as of right now are doing great my hoods are extremely cool(running a 6 inch vortex over a lumiair and a supersun two). The big buds are starting to put out new foliage I will keep you guys posted as to future appearance.

 

[MynameStitch]

It's a dry kind of heat that was causing this problem, not heat heat, meaning the lumens are causing the leaves to transpire more and when the leaves curl up it's a defense mechanism to try to save moisture to save the leaves. By curling it helps take away some of the dry heat protecting the inner leaf so the plant can try to repair itself so it won't lose the leaves.

You can have the best air cooling system available, cause I used vortex had a 6 in with a sunsystem air cooled hood. Got my first 1,000 watter and when I put it up I had it to close forgetting the wattage and caused leaves to curl, so I know from experience it happens and happens often.

 

[oldtoker]

defantly the plants growing under the sun no good (lol) gota have the lights really close to make it happen. the best pot ive ever grown/smoked came from the big light in the sky, ive alwasy figured 2 lights a lil higher then 1 light and plants way to close to the light is better, less heat just the pure lumens its picking up... my name stich so in your experience just the lumens themselves can and will dry up a vegative plant? i really think the plant can handle all the light u can hit it with, and the heat causes the stress. ive got some seedlings at about 28 inches under a 1000 mh thats not air cooled and so far everything is sweet just thick fat healthy seedlings with no stretch. id like to hear more about your idea of the light being to much for some plants. defantly i am here to pick up ideas so share themn friends.


i really value ur input stich let the info flow