Madmax
- 4,733
- 313
So this means you will have to increase air temp seem lst has dropped to 73 ..ideal leaf temp is 76-77f ?No. leaf temps drop.
Water acts as a coolant. If proper VPD is maintained and respiration is high, it's like sweat evaporating from your skin.
Bear with me...
Lets say you measure your leaf temp at 75* and ambient at 78*. But RH is too high to allow for proper respiration.
Adjust RH down.
Respiration goes up
Leafs get cooled by water
Now you are at 73* leaf temps but ambient has not changed. You now have to recalculate VPD.
Its the leaf temp that matters, not the ambient. And LED is way different than HPS, most LED have no iR to heat things up radiantly which HPS has lots of.
Last edited by a moderator: