if you're gonna stick with growing, why upgrade ten times???
if you're gonna be a grower, buy the freaking tools of the job...
Most serious growers will agree that you need at least 400 watts to start getting some efficient gram/watt ratio...
Wanna save money???? increase your gram/watt ratio...that is the only way to make it cheaper...more buds for the power you burn...
To increase your ratio as I mentioned, you will end up with at least a 400 watt HPS...
Why buy 278 CFLs, a 70 w HPS, a 150 w HPS, a 250 w HPS and then go...
Man!!! I should have just bought the damn thing in the first place!!!!
Save your money, buy the right tool....
your room 13 FEET by 4 FEET by 9 FEET tall???
Man you need a couple of 600 watt HPS on cool tubes and some kick ass fans...
That would give you the cheapest bud you can produce....
More grams of bud per watt burned... that is cheaper...
less money invested but less than 1/4 of the gram/watt ratio, is not cheap buds... in fact, if you do the math, it's probably very pricey bud...
My 2 cents...
I'll go away now... lol...
Gypsy...