finally legal and am planning out a new room want to go with
4 1000 HPS on a lighting relay for flowering
2 1000 MH for veg
two 6" fans fresh air inlet to cool the lights
125 822-1020CFM can filter with 10" 1022CFM can fan max
AC duct runs along the ceiling in the room tapping into that with...
your bill will depend upon your kw/hour cost figure that out and you can calculate it
the temp your plants will handle will vary depending upon the strain your dealing with water and nutrient condition and uptake, air circulation and stress levels
and TMofo is right lower temps=higher yields
thought id introduce myself myself since i just smoked my first legal bowl
i ve grown before without the right equipment with decent results
got the equip for a small setup while working at a hydro store last year and had much better results now ive been given an opportunity to build a system...
id go with a 6" with around 400CFM i have a 600HPS in a cool tube with a 6"vortex that pulls 455CFM and its still hot to the touch
so i think a 4" for your application would leave it pretty warm
do you only have 2' total or 2' under the tube?