Hi.
I have plants both under HID and LED in a tent. Generally, leaves under HID light get warm more than LED. I'm also running CO2 manually and because of that i need higher light intensity as normal. I know when plants get high level of light they need warmer temperature and reletitive humidity to reduce excess transpiration made by lights. With 28-29°C temperature and 70 reletitive humidity i had in my tent, my plants under HID are growing perfectly but the one under LED is not. She's discolored somehow, shomthing linke Mg deficiency. I have no IR LST measuring device but i thought thier leaves temperature is 31-32°C. I made some calc and started to set room temp and humidity at 28C and 70% respectively.
I think leaves of the one under LED are not as warm as those onder HID. So she feels much less VPD and because of that she transpire less and these discolorations have been made by low level of water and minerals uptake. I'm going to say she have mineral deficiency caused by low VPD. I can't lower temperature and humidity of my tent because of perfect growing of two other girls i have.
The only remain way to raise VPD for her is wind and air movement. Basically, the stronger the air movement, the thinner the humid layer around the leaves and higher VPD. so basically stronger air movement can slightly help my plant. Right?
Any suggestion? I'm interested by perfect growing of those girls under HID and I'm going the change temperature and humidity.
If you need pics, i send some when i got home.
I have plants both under HID and LED in a tent. Generally, leaves under HID light get warm more than LED. I'm also running CO2 manually and because of that i need higher light intensity as normal. I know when plants get high level of light they need warmer temperature and reletitive humidity to reduce excess transpiration made by lights. With 28-29°C temperature and 70 reletitive humidity i had in my tent, my plants under HID are growing perfectly but the one under LED is not. She's discolored somehow, shomthing linke Mg deficiency. I have no IR LST measuring device but i thought thier leaves temperature is 31-32°C. I made some calc and started to set room temp and humidity at 28C and 70% respectively.
I think leaves of the one under LED are not as warm as those onder HID. So she feels much less VPD and because of that she transpire less and these discolorations have been made by low level of water and minerals uptake. I'm going to say she have mineral deficiency caused by low VPD. I can't lower temperature and humidity of my tent because of perfect growing of two other girls i have.
The only remain way to raise VPD for her is wind and air movement. Basically, the stronger the air movement, the thinner the humid layer around the leaves and higher VPD. so basically stronger air movement can slightly help my plant. Right?
Any suggestion? I'm interested by perfect growing of those girls under HID and I'm going the change temperature and humidity.
If you need pics, i send some when i got home.
