Chunky Stool
Well-Known Member
I run HPS & MH together (mixed spectrum).Don't want to get into a "COB vs HPS" debate, but this is where the LED's benefit by lowering canopy temps. The heat produced by LED's is above the heatsink and not below the actual light. The more fans the better, keeps uniform humidity in the area you need it the most. (between canopy and light)
Also, Everyone worries about PM to come from high humidity. Not totally true. PM comes from shade and stagnant air. Fans, fans, fans. Move that air, especially on seedlings. Within 30mins, they will be stronger and no falling over.
LED isn't a good option for me because I actually need the heat generated by my legacy gear.
If I ran COBs, I'd need to add a heater and they pull serious amps.