Watts are watts......2000 watts of light uses ~2000 watts of power. Or 12/12=12khs's per day, per light, or ~ 360 kwhs/month.

With that kind of room I would personally go with 5 gallon bucket DWC or drip to waste setup with the Coco. You certainly do not need 15-20 gallon pots to get 2 z's a plant with 2 1000 watt H.P.S. But, I am not an advocate of dirt farming unless its veggies, so what the fuck do I know.

One thing I recently learned about mylar is it reflects heat as well as light. I read a post here by Ms. Weedhound I do believe and she was having heat issues and switched from mylar to flat white paint and resolved the heat issue, and did not notice any difference in plant health, or growth.

Your fan size is dependent on the size of the room. To calculate your fan size, its LxWxH to get cubic feet. You want a fan that exchanges the air every 2-3 minutes. (ex. you have a 600 cu. ft. room, a 365 cfm fan would be fine). If you have air cooled hoods that would help you also with controlling your heat.

C02 unless done under the right conditions is about as useless as tits on a bull in my book. Right conditions meaning higher temps, SEALED room, plenty of lighting (you have that), a sensor, and a delivery system. I'm sure I am going to get told I am wrong in saying this, but such is life.

Depending on your budget, you could do all kinds of neat shit with that much area.

Need to learn how to keep mothers and clone, that way you eliminate down time (waiting on vegging) between crops. FLower/harvest/move vegg'd plants right into flower room/flower/harvest/etc.......

Oh, and I'd have a peek inside the breaker box. Keep your phuckin hands and screwdrivers out of there, but look at the breaker sizes. If they are only 20 Amp per room, then running 2 1000 watters off one breaker is NOT possible. 1000 watters draw ~9 amps @ 110volts, therfore you would have 18 Amps on a 20 Amp breaker, thats a no-no.

AND, if you need any electrical work, get a certified electrician to do it, please. Tell him you are going to put a workshop in that room or some shit in the event he is a nosy prick and wants to know why you want 2 or 3 30 Amp breakers installed for that room.

BTW, I am UF alumni

Keep us posted and best of luck,
b0nger