Assuming stealth is not an issue (for everything except smell), why can't I make my cab roof with a ridged, rectangle cut out of it the exact size of my light and sit my light in that. That way the light is sitting outside the cab, and much less of a heat issue inside, plus it saves height inside for flowers. I'm talking a sealed hood 400W HPS. I could still vent the light to keep it cool, but thought it would help with heat issues inside the cab.
2. ventilation - air in. Is it best to get air from outside for CO2 content, or is it equally good to just take air from another area inside? Would have to make sure to keep the critters out obviously...
Air out will go outside.
Thanks for your help!
Rambongo