What is happening here??? I'm stumped

adam2706

Active Member
My lower leaves are wilting from the outside in and I can't figure out why. I started this plant from seed about 4 weeks ago. the roots are poking through the net pot finally, but only a few right now.Here is what I have tried.

I thought it could be light/heat stress, I moved the light a few more inches back, no noticeable change

I had a top drip running 24/7 until my roots poked through. I thought it might be root rot so I shut it off. No noticeable change

My next guess is the humidity is too low, so it is over drinking, getting nute burn, and stunting it's growth. I added a humidifier to the veg room to bring it up, we will see what happens

Here are my specs
DWC single bucket
1/3 strength canna nutes + hydroguard and cal mag
Res temp- 68 deg
2 airstones with 4 outlet activeaqua air pump
pH- 5.9 and holding steady day to day
Ppm- 550
Air temps- 75-77
Indirect airflow only ATM, the fan is too strong for the stem.
Humidity- 40-50% sometimes drops lower into the 30s during the day. (Ignore the humidity gauges in the pic, I had them resting right next to the humidifier before taking the pic.

Anybody know what this problem could be?
 

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My lower leaves are wilting from the outside in and I can't figure out why. I started this plant from seed about 4 weeks ago. the roots are poking through the net pot finally, but only a few right now.Here is what I have tried.

I thought it could be light/heat stress, I moved the light a few more inches back, no noticeable change

I had a top drip running 24/7 until my roots poked through. I thought it might be root rot so I shut it off. No noticeable change

My next guess is the humidity is too low, so it is over drinking, getting nute burn, and stunting it's growth. I added a humidifier to the veg room to bring it up, we will see what happens

Here are my specs
DWC single bucket
1/3 strength canna nutes + hydroguard and cal mag
Res temp- 68 deg
2 airstones with 4 outlet activeaqua air pump
pH- 5.9 and holding steady day to day
Ppm- 550
Air temps- 75-77
Indirect airflow only ATM, the fan is too strong for the stem.
Humidity- 40-50% sometimes drops lower into the 30s during the day. (Ignore the humidity gauges in the pic, I had them resting right next to the humidifier before taking the pic.

Anybody know what this problem could be?
Nutrient burn..., nutrient strength is to high and RH is too low.
 
from what I understand. 550ppm is about 1.0 EC. And that seems low for the stage you are in. But your plants are suffering from nutrient burn. So I don't understand... My plants are 5 times smaller than that and they are getting around a E.C of 0.9 and they are suffering from nutrients deficiencies, rather than nute burn. Well one of them is struggling along, the rest are fine.
 
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