HELP my seedlings have gone pale in 6 hours

Hgrow4

Active 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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Hgrow4

Active 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

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

Well-Known 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
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.
 

Hgrow4

Active Member
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.
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

Well-Known 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
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.
 

Hgrow4

Active Member
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.
Alright thanks for the help
 

VRZ711

Well-Known Member
Last night I took the propogation dome off and this morning 50% of them are a light green.
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.
 

Hgrow4

Active Member
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.
I have my VPD dialled in. I think it is over watering as they are getting watered 24/7
 
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