Problems with leaves in LED grow

What strain(s)?

I don't think that's a factor but I've have euphoria, p phunk and chemdawg with the same affects

cherry ak47 too come to think of it. anything I put under those fucking panels goes to shit, I'm a soil noob and I've been doing it in organics but I don't really think I'm doing anything that wrong.

dbkick said:

I don't think that's a factor but I've have euphoria, p phunk and chemdawg with the same affects

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Just wondering, another user on here claims that white breeds (widow, shark, etc.) do poorly under LED for whatever reason. At least that has been his experience.

I'm def down with the idea you gotta learn how to grow under LED but I dunno man, just doesn't seem worth it at this point for me. I say this after spending a couple grand on panels. Of course, not quite ready to throw in the towel but if I can't get decent results in hydro (in veg at least) I'll have no choice.

dbkick said:

I'm def down with the idea you gotta learn how to grow under LED but I dunno man, just doesn't seem worth it at this point for me. I say this after spending a couple grand on panels. Of course, not quite ready to throw in the towel but if I can't get decent results in hydro (in veg at least) I'll have no choice.

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I can dig that. I'm a big noob, this is actually my first grow, but I'm doing LED. I'm happy so far with what I see, nice dense buds and very little issues except the yellowing of older fan leaves on one plant. I grow in soil, but is my own little mix of peat moss, compost, perlite, vermiculite, and various organic nutes (granulated or powders).

jubiare said:

I feel u guys coz am having same kind f issue this time around .... first pics you posted look the same as mine! Mine got worse .... am gonna have a nothing harvest.
For me this is the first time having such issue ... had a few good grows lately ... so even more confusing. Chatting to a few reputable growers they suggested It can be the light ... but I don-t know .... sorry am not of not much help, just in the same boat. Go figure .....
Good luck!

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What LED brand are you using?

can we see more pics of your issues? the majority sound like nutrient deficiencies/overload/lockout problems but without precise details on nutrients/doses and feeding schedule it's hard to determine. Hopefully the first step, flushing, has already been done. Next, start over with the nutrients at low doses and giving more/less of the nutrient you believe to be the culprit. Things should start to clear up. I'm also a fan of cutting off the zombie leaves. Hope this helps some, just really basic info until we know more about the situations at hand.

easy to blame it on LED! there was only 135 watts over this plant, it did just fine! I think the tricky part is feeding for all of you guys using bottled nutrients. Because the soil takes twice as long to dry (compared with HIDs environment) I dont know I would say dont give your bs 500 thinking they don't work, I am sure they do... only not as good as others.

RobotJr said:

Get organic soil and flush out with warm water and peroxide, a full bottle Flush with the water last naturally ~

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Organic soil and peroxide are not a good combination...

LOL organic soil and flush it out with peroxide dude lol........ that would defeat the purpose of organic first off because there is beneficial bacteria in it throwing peroxide in there will kill everything....... dude I understand you are trying to help someone but please do not give out misinformation .... your going to have this guys plants dead in 1 day doing that.... def looks like mag def or N def flush and hit it with some light load of nutes and PH that water ! if you can.

I don't know if this is the case for any one else but I have to keep my lights in the same spot, and let the plants stretch into them. Generally 28" to 36" above the canopy when the plants are initially put into flowering, by the end of flowering my plants have managed to get within 8" of a panel that most people would tell me to throw away. Simply put, do not give up.

There are many solutions, a lot of led users ease the transition into full blown led grows by having some full spectrum wattage from a T-5 or CFL. This light is rounded, and because most of its focus is in the 500's nm area most of your light is getting bounced right back, or is it. The sun puts out mostly light from the center of the visible spectrum ei. green, orange, yellow, teal. 5850k. This light penetrates the canopy deeper and sends hormonal signals to the plant to create more foliage to fill in the light available. In my experience having the correct hormonal balance is very necessary when growing the best cannabis you can, and some panels simply do not have an adequate amount for the plant to perpetuate its self with out the addition of an unending amount of micro-nutrients in order to make up for the lake of hormonal chemistry.

Some panels do this, but I think for now you should take this bit of advice; get a medium that can host micro organisms. That way these deficiencies don't happen, and if you know what you are doing you won't burn plants ever again. Just a thought, salts can get fucked up fast, I would rather have millions of invisible allies waging a war of absolute bliss beneath my soil. Sounds nice don't you think?
Grow on now,
ILovePlants

RobotJr said:

Get organic soil and flush out with warm water and peroxide, a full bottle Flush with the water last naturally ~

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The emoticon kinda gives away he knows he's giving shit info.

Endur0xX said:

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easy to blame it on LED! there was only 135 watts over this plant, it did just fine! I think the tricky part is feeding for all of you guys using bottled nutrients. Because the soil takes twice as long to dry (compared with HIDs environment) I dont know I would say dont give your bs 500 thinking they don't work, I am sure they do... only not as good as others.

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Trust me, I have enough wrapped up in even these "cheap" LED panel and enough experience to tell me EVERY grow doesn't go well, this time my HID beat out the LED but not really by that much. Going to hydro for the real test. But from what I can see if you're shooting for 1 gram per watt you came up a little short.

well fair enough. I am a beginner, doing better each time. I didnt get nearly .5 grams per watts with my HIDs anyway ,but I never used my lighting to it's full potential, I always had room for more plants. Also, I grow 12/12 from seeds now and all that grams per what is often shit talk, all I want is smoke my own dank, real dank. The way my HIDs plant just finished under my new LED setup is stunning, I must give some credit to the HIDs for that plant, but I must say for the last 2 weeks, it was strictly under the FERO, and it turned frosty like I have never seen before, I will try to post pics soon.

RobotJr said:

Get organic soil and flush out with warm water and peroxide, a full bottle

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What a fucking muppet...

Ok guys for anyone still having problems with leaves under LED

I had two plants die on me under a blackstar240 and my next plant was showing the same signs before i done alot more research and found if your using soil or coco you will be most likely to have trouble as plants need ALOT more Iron under led and some products i got dident work as i needed something with iron only and not other nutrients also, i got myself some liquid iron 100% natural and give it to the girl showing the same signs as my last two that died (burning leaf tips and yellowing until all leaves are burned and gone) and right away the plant came back to green leaves and the burning stopped, its growing great again now under the blackstar240 but i dont think its possible to grow them unless you are using a low powered led or have nutes high in iron or add iron to the feed, the reason for this is the plants grow faster under led and require alot more iron, ive also bought a seaweed iron tonic that i will be trying thats 6% chealted iron

I hope this helps someone cause it really helped me, i am confident of growing under led now

Hmmm, iron....interesting. I supplement with techniflora magical which is also high in iron. I've never made the connection nor tried supplementing individually. You could very well be on to something here. Thanks for sharing your experiences.