HELP my seedlings have gone pale in 6 hours

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Hgrow4

Member
My seedlings have been going for 7 days and we're all a nice dark green.
They have a 600w lights at 25% 900mm away they are warm at 26 degrees and have humidity from a humidifier.
Last night I took the propogation dome off and this morning 50% of them are a light green.
I have attached photos.
They have green in an auto propogation 24/7 with the vents open and SHOGUN start and katana roots.
Any help would be much appreciated
 

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H

Hgrow4

Member
My nutrition guide says 2 weeks before I feed proper nutrients.
And I was going to keep them in rock wool for 2 weeks and go straight to 30L pots.
Any help would be really appreciated guys
 
Rurumo

Rurumo

Well-Known Member
I'd even get a lux meter to see how strong the light is, they're cheap and good enough until you get a par meter. Hotrod is right, you'd have a hell of an easier time getting them started under fluorescents-4 bulb t5 fixures are awesome for germination and early growth. And I agree, overwatering will be your biggest threat right now in rockwool. In any soilless meda, you have to start feeding from day 1, you just start at a low EC.
 
CaliRootz88

CaliRootz88

Well-Known Member
Hgrow4 said:
My nutrition guide says 2 weeks before I feed proper nutrients.
And I was going to keep them in rock wool for 2 weeks and go straight to 30L pots.
Any help would be really appreciated guys
Click to expand...
How are the Humidity levels? (Average) outside the dome?
What distance is the light in inches? Feet? 25% for a 600W light depending on the distance can easily be overkill accompanied depending what ur humidity is outside the dome by not hardening off properly. Seedlings are extremely sensitive. They have food source for 2 weeks. Your issues appear to me to be environmental in my opinion.
 
H

Hgrow4

Member
CaliRootz88 said:
How are the Humidity levels? (Average) outside the dome?
What distance is the light in inches? Feet? 25% for a 600W light depending on the distance can easily be overkill accompanied depending what ur humidity is outside the dome by not hardening off properly. Seedlings are extremely sensitive. They have food source for 2 weeks. Your issues appear to me to be environmental in my opinion.
Click to expand...
I have a lumatek zues pro 600w
It's 800mm 32 inch from the leaf at 25%.
The humidity outside the dome is about 42-46% and inside 52-58%
it is a propogation with a pump spraying the bottom side of the roots 24/7.

thanks you all for input
 
LeastExpectedGrower

LeastExpectedGrower

Well-Known Member
Hgrow4 said:
My nutrition guide says 2 weeks before I feed proper nutrients.
And I was going to keep them in rock wool for 2 weeks and go straight to 30L pots.
Any help would be really appreciated guys
Click to expand...
I always assume that you have about 1 week from germination to when the seed has used up its reserves of nutrients for the sproutling. I use another medium that doesn't really carry any 'charge' so I start feeding after a week, starting with low concentration and bumping it up across a few weeks to full strength.
 
H

Hgrow4

Member
LeastExpectedGrower said:
I always assume that you have about 1 week from germination to when the seed has used up its reserves of nutrients for the sproutling. I use another medium that doesn't really carry any 'charge' so I start feeding after a week, starting with low concentration and bumping it up across a few weeks to full strength.
Click to expand...
Alright thanks for the help
 
VRZ711

VRZ711

Well-Known Member
Hgrow4 said:
Last night I took the propogation dome off and this morning 50% of them are a light green.
Click to expand...
its one of 2, over watered, or low humidity, at this stage keep the humidity as high as possible, dont think about feeding now. just fix the micro climate, google VPD.
 
H

Hgrow4

Member
VRZ711 said:
its one of 2, over watered, or low humidity, at this stage keep the humidity as high as possible, dont think about feeding now. just fix the micro climate, google VPD.
Click to expand...
I have my VPD dialled in. I think it is over watering as they are getting watered 24/7
 
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