Coming from hid ,Problems with Led

[Frankster73]

I switched to Led lighting.....600 Watt lumatek in 5x5.....my plants are dying.....
My water has 72 mg Calcium and 5 mg Magnesium.....Comes Out at 0.4 EC....i use peters fertilizer and Calcium Nitrat....... Supplement with Epsom Salt......
Plants are looking horrible.....Red stems....Phosphor? Leaves Curling down and are wrinkled......
Anybody have a Idea where my Problem ist?
Those plants are in veg.....350ppfd.....65-70 rh and around 34-25 degree celcius

 

[Frankster73]

I switched to Led lighting.....600 Watt lumatek in 5x5.....my plants are dying.....
My water has 72 mg Calcium and 5 mg Magnesium.....Comes Out at 0.4 EC....i use peters fertilizer and Calcium Nitrat....... Supplement with Epsom Salt......
Plants are looking horrible.....Red stems....Phosphor? Leaves Curling down and are wrinkled......
Anybody have a Idea where my Problem ist?
Those plants are in veg.....350ppfd.....65-70 rh and around 34-25 degree celcius View attachment 2371369View attachment 2371370View attachment 2371371View attachment 2371372View attachment 2371373

Forgot to mention....the Girls are in Coco

 

[donkanaille94]

I switched to Led lighting.....600 Watt lumatek in 5x5.....my plants are dying.....
My water has 72 mg Calcium and 5 mg Magnesium.....Comes Out at 0.4 EC....i use peters fertilizer and Calcium Nitrat....... Supplement with Epsom Salt......
Plants are looking horrible.....Red stems....Phosphor? Leaves Curling down and are wrinkled......
Anybody have a Idea where my Problem ist?
Those plants are in veg.....350ppfd.....65-70 rh and around 34-25 degree celcius View attachment 2371369View attachment 2371370View attachment 2371371View attachment 2371372View attachment 2371373

Don't know, never grew in coco, but 34C and 70 rh seems a bit much? I'm also in veg, but between 35 und 50 rh and 22-24C, just my two cents.

 

[donkanaille94]

Don't know, never grew in coco, but 34C and 70 rh seems a bit much? I'm also in veg, but between 35 und 50 rh and 22-24C, just my two cents.

oh, and I'm at 800 ppfd also lol, had to turn it down a tad

 

[Frankster73]

Oh sorry ....of course i meant 24-25 gegrees celcius

 

[Frankster73]

8oo is way Off my Chart.....at 300 ppfd the plants seemes to hide from the light .... They cannnot Take that ammount of light.......Well i know they could If everything was in Check ......

 

[Frankster73]

I have Heard about @Aqua Man is Like a plant Whisperer....Help me Out Bro

 

[NairnM16]

0.4 ec is a bit low for plants tht size no? My guess would be more food
And in coco you should be giving these girls around 2L to a gallon a day ph to about 6.2 at 1.2/1.4 ec

Max temp would be 27c
I keep my room around 22/24

Rh I like 62%
Around 50/55% in flower

I use the 600w lumiteck 2.9
Solid light I run my veg at 50% about 2/3 ft away

Alot of airflow is key aswell but coming from hid/hps I’m sure u know all about heat stress

 

[Frankster73]

I have Heard about @Aqua Man is Like a plant Whisperer....Help me Out

0.4 ec is a bit low for plants tht size no? My guess would be more food
And in coco you should be giving these girls around 2L to a gallon a day ph to about 6.2 at 1.2/1.4 ec

Max temp would be 27c
I keep my room around 22/24

Rh I like 62%
Around 50/55% in flower

I use the 600w lumiteck 2.9
Solid light I run my veg at 50% about 2/3 ft away

Alot of airflow is key aswell but coming from hid/hps I’m sure u know all about heat stress

Thanks for the replys.... O.4 is the Background EC,.....i Had a few Problems because of fabric pots i used.... The fabric attracted the salts from the nutrients....when i have 1.3 EC the runoff was Up to 2.5.....a friend gave me the hint to Check the pots .. so i soaked 5 fabric pots in 3 Liter water and the EC was 3.3....!!! So i tosed the fabric pots ....now the runoff is OK.....Put the plants still dont perform.....i get Magnesium defecency and wont get rid of it no Matter what i do.....i did foliar wit Magnesium....nutrient solution is around 50mg Magnesium and 130 Calcium.....plants Look overwatered... After the 6 hours dark Period they Look better.... Leaves are praying......after 2 hours light with a ppfd of 180 the leaves are drooping....i have roots coming Out the pots.....so overwatering shouldnt be the Problem i guess... I really need some Help Here

 

[Frankster73]

Heat Stress is ruled Out alredy......temps are 24,humidity around 70....still in veg.......leave Temperature is 22.5-23 degrees.....vpd is in Check......i cant find my mistake ......Yesterday i raised the ppfd to 300 and instantly i got Brown spots on the top leaves within 30 minutes.....i have never Seen Something Like this in 25 years of growing

 

[Frankster73]

I will Provide some Pictures later on

 

[Gmix]

LED & hid are very different

LEDs are very intense and need dimming a 600led is way more intense than a 600hps

Red stems are not uncommon & don’t mean much under led

Not saying it is as I can’t see the new pics yet however light stress shows differently

Two things not mentioned are your ph level as your in coir & your lights distance / if it’s dimmed

 

[donkanaille94]

8oo is way Off my Chart.....at 300 ppfd the plants seemes to hide from the light .... They cannnot Take that ammount of light.......Well i know they could If everything was in Check ......

I guess you are right, but they take it rly good. Got 550 combined watts on them and just fed. Some tips are yellowing but the old ones only, im water my friend.


Maybe my ppfd app is off, dunno, as long as they are thriving, im too:)

 

[Frankster73]

I guess you are right, but they take it rly good. Got 550 combined watts on them and just fed. Some tips are yellowing but the old ones only, im water my friend.


Maybe my ppfd app is off, dunno, as long as they are thriving, im too:)
View attachment 2373445

 

[Frankster73]

They do Look a little better today.....i upped the EC Yesterday to 1.5......
Since they do Look better i gave them a bit more ppfd....250.... The Brown spots above in the Pictures....that happend within 30 Seconds with a ppfd at 350.....never Seen such a fast necroses.....

AS you can See Not all of them are doing better.....i will See an trash the ones that cannnot hold Up.....

Should i raise the EC a little more?
I am very interested in different ooinions