growrooms x 2 questions?

[psteve]

Cheers guys for your time in replying.

Steve Im thinking more and more now about the little room Cheers bud....maybe in time Ill fill the other room I rekon I would need 1800wts for that space.

Plan is to extract into my attic (its above my grow area) via a cf & 10" fan,intake will be via an open window and probally a 6" fan for this..sound good?

Once again cheers folks.

Bh.

I'd recommend three 600W HPS, for best efficiency and coverage, or two 600W HPS and two 400W MH for broader spectrum, and even more lumens.
Venting upwards is usually best for heat extraction. :thumbsup:
Fan size depends on CFM (fan efficiency) and room size.