Hi all, hey if any of you are using a cmh what height are you setting it at? Ive got mine at 23" plus a Vibraspectra 450 led at the same ht. in a 4x4. Any help would be appreciated.
This is my first grow using my cmhs. I have two 315w CMHs. I keep mine around 15 to 24 inches above the canopy. Once it starts to feel warm on the back of my hand I raise it up an inch or 3 just to be safe. I hope this helps.
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I have been growing with a cmh for 2 years and keep it about 24 inches off the plants
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