MIMedGrower
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Side question @Aqua Man
Do you know of a test that shows improvement using vpd parameters rather than just keeping temp and humidity in a hospitable range. Like 77 farenheight and 50% rh at the canopy?
I dont have the old links but many tests say marijuana is not effected by humidity much. Just temp.
No quality or yield increase or decrease with varying grow humidities.
I think maybe the popularity of vpd. Which was developed for greenhouse use to compensate for high temps. Is because of early led lamps with no ir.
But the solution was the manufacturers added ir not change grow parameters.
Do you know of a test that shows improvement using vpd parameters rather than just keeping temp and humidity in a hospitable range. Like 77 farenheight and 50% rh at the canopy?
I dont have the old links but many tests say marijuana is not effected by humidity much. Just temp.
No quality or yield increase or decrease with varying grow humidities.
I think maybe the popularity of vpd. Which was developed for greenhouse use to compensate for high temps. Is because of early led lamps with no ir.
But the solution was the manufacturers added ir not change grow parameters.