That's (almost) super helpful, thanks!! But it opens another can of worms, I don't have an IR thermometer, what would be the expected temp below ambient for an average QB setup?Ill do you one even better:
http://opennlabs.com/vpd/VPD_calculator.php
This one you can set it for +- degrees in C, in order to adjust for leaftemp being higher or lower than ambient.
Remember that VPD is not the bible but when you get environment related problems with the grow it can tell you in which way to go.
It kinda depends on how much light you give them and what spectrum, id shoot for somewhere between -1 and -2 but primarily look at your plants for a happy praying stance.That's (almost) super helpful, thanks!! But it opens another can of worms, I don't have an IR thermometer, what would be the expected temp below ambient for an average QB setup?
3500k 90cri at around 400uMolIt kinda depends on how much light you give them and what spectrum, id shoot for somewhere between -1 and -2 but primarily look at your plants for a happy praying stance.
Its not really about DLI, its more about more light, hotter leafs. Id also encourage to try with -1. Almost as a general advice for growing led if you come from a HID background, use more heat rather than less. It boosts the metabolic rate of your plant. They will be happy up to 30°C. But you need to have really good control of your humdity.3500k 90cri at around 400uMol
Thanks, never really considered that there was a sweetspot, all of a sudden DLI makes much more sense.
best $30 you can spend at harbor freightThat's (almost) super helpful, thanks!! But it opens another can of worms, I don't have an IR thermometer,