REALSTYLES
Well-Known Member
Just woke up from a drunken nap lol It was more like being stoned and drunk lol it's Friday and the seeds I sprouted are female yeah baby I'm making clones of these new strains and I don't know what to call them.
Plant problems under LED
- Thread starter Rahz
- Start date
I doubt there is a fault in design, it's a bit of an odd go-to for some of these guys 
I had similar struggles, light intensity fluctuation good canopy temps yet low soil/ambient temps. Deficiencies came later.
Large Pots and underfloor heating (greenhouse tube) helped eliminate early dramas.
I had similar struggles, light intensity fluctuation good canopy temps yet low soil/ambient temps. Deficiencies came later.
Large Pots and underfloor heating (greenhouse tube) helped eliminate early dramas.
gk skunky
Well-Known Member
Since everyone has touched on light amounts and their proximity. Is he recycling grow media? Sure it's not a pH and/or over fert issue? Too much light isn't as prone to eagle claw top type of leaves as much as 3 things. 1. Over fertilization whether through normal feeding or recycling soil. 2. pH is drifting big time 3. Not watering enough and allowing the media to dry out too much. I would investigate those 3 scenarios first.
Rahz
Well-Known Member
I haven't asked about some of those things, mainly because he's got his methods down to a science in the context of what he's been working with. Perhaps the plants are requiring more water and he's not responding. I'm sure he doesn't reuse soil, and only starts adding ferts in flower. I'll be taking a look at things Monday so will keep that in mind.
I'll try to get him to set up a second veg space (he has the room) and keep the lamp and start from seed. I know the guy well, so worst case I'll give him the money back and let him keep the lamp if he'll run a second veg space so eventually he will end up buying it.
Mainly I want to get a better understanding of why this happens in transition as it could be helpful in the future. Prime candidates so far are increased water needs, root development not able to absorb nutrients fast enough, possible soil deficiencies or even leaf response issues to excessive light exposure. He uses decent soil so I'm not going to focus on soil deficiencies.
I'll try to get him to set up a second veg space (he has the room) and keep the lamp and start from seed. I know the guy well, so worst case I'll give him the money back and let him keep the lamp if he'll run a second veg space so eventually he will end up buying it.
Mainly I want to get a better understanding of why this happens in transition as it could be helpful in the future. Prime candidates so far are increased water needs, root development not able to absorb nutrients fast enough, possible soil deficiencies or even leaf response issues to excessive light exposure. He uses decent soil so I'm not going to focus on soil deficiencies.
KarmaPaymentPlan
Well-Known Member
start the light as far away as possible and lower as needed would be one of my instructions for the light at least it might stretch before cooking next time
bizfactory
Well-Known Member
I started my clones under some CXB3070s after a transplant from solo cups but kept the lamp high and the power turned down to roughly half...which I'm assuming is about 700ma. I was a bit concerned about blasting them right away. I didn't have any issues but I have noticed some serious calmag issues under this white light.
I'm very interested in how this turns out. I've told a few people that I'll build them a lamp but this scares me a bit. Especially when you are trying to convince a long time HPS guy that what I'm building is the future!
Best of luck to you and your friend.
I'm very interested in how this turns out. I've told a few people that I'll build them a lamp but this scares me a bit. Especially when you are trying to convince a long time HPS guy that what I'm building is the future!
Best of luck to you and your friend.
Rahz
Well-Known Member
He's bought a 600w bulb and ballast and has it turned down to 50%.... not as bright as the 200w LED. The LED lamp was sitting on his floor for a couple weeks. I just picked it up tonight. Now I seek another victim 
It is bothersome. I've always used Vero and this is my first time dealing with CXBs. However I used an emitter from the same batch at 50 watts to sprout 30 some pepper plants and grew them to a couple inches before switching them to a permanent Vero 18 fixture prior to putting them in the garden. The peppers seemed to do just fine under the CXBs.
I have someone else who I think is going to play with it in a spare veg tent. They know each other and the first guy warned the second guy. Fair enough... but I suspect it will work out fine.
It is bothersome. I've always used Vero and this is my first time dealing with CXBs. However I used an emitter from the same batch at 50 watts to sprout 30 some pepper plants and grew them to a couple inches before switching them to a permanent Vero 18 fixture prior to putting them in the garden. The peppers seemed to do just fine under the CXBs.
I have someone else who I think is going to play with it in a spare veg tent. They know each other and the first guy warned the second guy. Fair enough... but I suspect it will work out fine.
Jeeyah
Well-Known Member
Same thing happened to me. I put my vegging plants under COB lights. I had one light going in flower for a while, and it seemed great. I put some good size girls under COB's, and all the leaves clawed, The stems turned red. It hurts to look at them.
I turned down the HLG's, added some Epsom salts to the mix, cranked the ppm's up a little higher, and gave them some good runoff. (Coco) They look like a nightmare. They show symptoms similar to HPS shock. That used to drive me crazy. It seems they they don't need a lot of intensity until around week 3 of flower.
I turned down the HLG's, added some Epsom salts to the mix, cranked the ppm's up a little higher, and gave them some good runoff. (Coco) They look like a nightmare. They show symptoms similar to HPS shock. That used to drive me crazy. It seems they they don't need a lot of intensity until around week 3 of flower.
Mg, Ca or Sulphur deficient. This is my third run under white LED (DNA Lemon Kush and HSO Blue Dream), this time the BD looked a little chloritic almost from the start, probably from the start. Haven't grown before.. it could just be a hungry gal? I chased it with Calmag last run and it did take several weeks before they looked truly healthy (from when I had no further dramas). So a few days back out came the Calmag. This time I mixed in half strength, also half strength Powerfeed (Kelp based NPK), Season (tonic) and a squeeze of Aloe (they must be stressed, regardless). Soil drench/watering as well as spray.
It's one of these! lol. Next time I will isolate them, it could just be the combo Calmag with a increase feeding, the effect on BD has been dramatic, no more than a few days and they look happy and healthy.
It's one of these! lol. Next time I will isolate them, it could just be the combo Calmag with a increase feeding, the effect on BD has been dramatic, no more than a few days and they look happy and healthy.
hybridway2
Amare Shill
Deffinetly a serious learning curve.
LedDefficiency is tough but once you figure it out, there's NO going back.
I personally suffered for 2 yrs. But am making up my losses x3 fold now.
LedDefficiency is tough but once you figure it out, there's NO going back.
I personally suffered for 2 yrs. But am making up my losses x3 fold now.
its.always.420
Well-Known Member
U guys having so much problems under LED, what temps are you running? Day and night?
I'm finding that keeping a tight DIF + lights on temps in mid 80's gives much better results and cuts down on calmag needs
I'm finding that keeping a tight DIF + lights on temps in mid 80's gives much better results and cuts down on calmag needs
hybridway2
Amare Shill
So here we are folks. White leds hit the mkt but they did not come alone. They brought LedDefficiency along with them.
I said this term about 18mo ago give or take 6 months. And people here called me crazy.
Well, here it is dating back to "15".
Prime example.
There are 1000's more posts like this out there yet i was the bad guy for giving it a name? SMH! Some just can't accept the truth after dumping coin into something.
A Defficient light source will create a defficient plant unless 90% of the proper changes are made. 50% of those changes relate to spectrum imo. The other 25/25% is environment & feed as well as feeding pattern.
Honesty goes a long way with me & Rahz has always been one of the honest ones.
Rahz
Well-Known Member
Still not sure what the problem was at that particular location. I've used various brands of white emitters, various K and CRI ratings, and had success with all of them. I'm playing around with CMH in an area. Doing well but so far I don't see a reason to quit using white LEDs. If I built a lamp today I would do something similar to what I did with my test lamps. CLU085-1825s at 50w each or maybe Vero29SE at 45w each, or maybe 25w each.
Humple
Well-Known Member
In my (admittedly limited) experience, it's environment more than anything. When I can manage to keep my VPD right, I have happy plants - under straight 80CRI, 3000k.
hybridway2
Amare Shill
Try adding a few 660+740nm around the cob that is at least 35k.
Might be worth the SBS To you. Never know till you try.
lukio
Well-Known Member
lol give it up @hybridway2 your theory is nonsense.