So for 1000W I want a ceiling higher than 8' to prevent bleach/burn? And if they can't be air-cooled, how do ya cool the room to keep the plants at a happy 78F?
Oh, and THANKS Jiji.
A big fan, and a big mini split
From Gavita tech support:
"There is a minimal distance between the lamp and the crop. For 600W this is 60cm/2 ft, for 750W this is 70 cm / 2 ft 4 inch, for 1000W this is 90 cm / 3 ft. In larger rooms with many overlapping lights the optimal distance is often even a bit further away."
If you have the ballast on reflector, this does hinder your crop height, because the bulb ends up being a fair amount lower than the ceiling. Having said that, I use 1000's on an 8ft ceiling.
Curable with the right reflector? Such as?
The reflector on the gavitas is great. Gavita just uses a different paradigm for lighting.
For instance, A sun system blockbuster air cooled reflector takes a standard HPS bulb. It focuses all that light down to a square 4x4 footprint.
Gavita coming from a commercial standpoint doesn't work that way. Their goal indoors is lighting uniformity with an average of 1000 umol m-2 s-1. This is done by using highly reflective walls and lighting the WHOLE grow room from wall to wall evenly. Whats critical is the layout of lights and overlap. The smaller the room, the harder it is to achieve.
That's just ideal though, I'm sure there’s some generality’s you can follow.
- Jiji