Good idea! Get a foothold for your brain to start digesting all this info you've read by applying it to real-world experience and THEN kick it in to high gear...plus you'll have an idea of what you like/don't like so you're not spending money on stuff you won't use.
Depends what you call an average sized plant...average indica or sativa height?
Let me ask you this before we really go that direction...are you planning to let your plants grow naturally or are you intending to do some height training/restriction ala LST? I'm guessing you'd like to utilize the nine feet you have but I'll explain my take on both situations. If you're going to let them grow natural I'd lean towards HID on both veg and flower IF you're going to let them veg for a couple of months since HID's have much better penetrating power than CFL. If you're only going to veg for a month then you can get away with CFL's for sure and then switch to HID for flowering.
On the other hand if you're planning on LST'ing (doubt it) CFL for sure during veg. As I mentioned I had 260W of CFL power (17k lumens) on my plant for my first grow and did ok. With a 2 week veg period and a 20/4 light cycle and then in to 12/12 after that I had a plant that was 13" tall (no LST, just let it grow) and yielded a little over an ounce dry of some rock hard buds. If you check towards the end of my first journal you'll see I did get a bit creative with the lights as I basically surrounded the little plant (cone shape) with CFL's. Six on top, two to the left of the plant down low, and two more on the right hand side down low. But since I doubt you're going this route I'll stop...TMI, don't want to confuse you.
Yeah, the red spectrum is more suited to flowering as the sunlight in the fall is more towards that end of the spectrum.
I used to be like that...until my employer laid most of us off. Keep spending that money! We're not going to get out of this recession if nobody spends!
That's actually an easy question to answer but I can't be specific without knowing how much you pay per kwh. Figuring roughly 10 cents per kwh let's make an educated wild ass guess assuming 400W of lighting (doesn't matter what kind, 400W is 400W) and a 20/4 schedule (20 is a nice round number to do math with) for veg.
400W X 20 hours = 8000 watt-hours = 8kwh
8kwh * 31 days in a month = 248kwh
248kwh X 0.10 (10 cents) = $24.80/month
Now with an 18/6 schedule:
400 X 18 = 7.2kwh * 31 = 223 X 0.10 = $22.30
You should be able to recalculate this for whatever light schedule you want, whatever wattage, and whatever your utility company charges you fo electricity...have fun!
Yeah, I LOVE the planning stage. As for the wall just get some 9' 2X4 studs (dirt cheap) and use them to frame it up and layer the sheetrock over it with insulation in between if you want/need. You'll have a couple of 2X4's to mount the sheetrock on but what do you fix the 2X4's to? I'm not a carpenter but going by memory of what I have seen in houses as they are built is they will lay a 2X4 (or whatever thickness the walls are to be) flat on the ground and attach the studs to it. The key here is to check your lumber and make sure it is straight and flat before you buy it...warped studs are mostly useless. How to attach that to the ground? Not sure, probably blast some little holes in to the foundation with those .26 caliber (or whatever) charges and put some masonry/concrete bolts through the 2X4 in to the concrete.
You're welcome!