Dirtbag
Supporter
- 9,158
- 313
Right. I only use half that now but i see stress at about 18” from the glass.
Now if we are pushing for yield i got room but for the most canabanoids i like them to stay cool and comfortable.
Fair point. Climate and plant comfort/avoiding stress is everything. I'll admit I'm not a fan of horizontal HID lighting for this reason. The bulbs do cast a serious hotspot from the side. I've had much, much better grows since downgrading to those cheap ass parabolic vertical shades that I paid $20 each used for lol. The plants get almost all reflected light so its nearly impossible to get light burn from them, and it just suits my semi stadium setup better. Casts light out to the side plants.
I keep my lamps about 24" away from the top growth when turned up to 1000.