Leafs are turning yellow when plants are put in what should be an excellent grow room

terance

Member
Hello!

I am having a problem with some plants. They have been grown to about 10-20 cm in my living room and bath room with aprox 2-3 hours of light a day. They where growing fine and looked nice and green etc.

When I put them in the grow room after 2-3 weeks (it was occupied before) they started to turn yellow at the center top. Now after 1,5 week they have gradually turned more yellow. The pics under are from today.

The humidity is 40-50%. I know it is not perfect for all stages but it shouldnt cause symptoms like this anyway, as far as I understand.

The temperature is between 20-30. But now Ive put the heater on 25 to make it more even, in case its because of heat stress.(?)

Sulfer, nutrition etc I think I can rule out because this happened right after they where put in the grow room. This has happened with plants on earlier attemps as well. Fine condition when Ive had them in the kitchen etc for a couple of weeks, then they start turning yellow once put in the growroom.

Thought it might be the air condition, so I have temporarily removed the coal filter. (its safe). And now there should be plenty of air circulation.

The plants should also be in a safe distance from the lamps. (Have used a 250W hps, now using a 150W hps)

Have been looking at numerous "sick plant" pictures on the net, and there are only a few which I think look similar. And those are related to thigs I rule out (maybe very wrongfully, of course).

Other things to note is that this is in an attick. Is there a small chance there is some strange fungus shit or bad air ?:confused:

Please tell me if you need any more details. Help much apreciated!






 

irishstaff

Active Member
They are crying for Nitrogen .
Your flowering nutes proberly dont have a good N , so if i were you i would address this problem with a boost of high Nitrogen , , See on the last pic the yellowing is starting from the middle of leaf and working its way towards the edges
 

terance

Member
They are crying for Nitrogen .
Your flowering nutes proberly dont have a good N , so if i were you i would address this problem with a boost of high Nitrogen , , See on the last pic the yellowing is starting from the middle of leaf and working its way towards the edges
Will try adding nitrogen nutes! I read on another site (norwegian) that lack of nitrogen symptoms usually starts on the older leafs. Maybe this is wrong?
 

terance

Member
Plants are getting worse. I am going to remove the two on the pictures below from the room and see if they get better in my living room...





 
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