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Here's what I have seen. http://www.ebay.com/itm/HPS-MH-Bulb-Splitter-Digital-Ballast-1000-Watts-2x600-SPLITTER-SOLISTEK-/291598846670?hash=item43e4a54ace:g:PuIAAOSwv0tVNp5N It runs 2 600 watt @500 watt off of a 1000 watt ballast.

Good come back. lol

These are always so fun! :) 2 cents....Reading for 20 years is NOT experience, except at reading.

6.5 ... 7 ...whatever they are. You will probably need a cool tube too.

at min. go with 3x3x7 for that 600. Be thinking about a good extraction fan to remove the heat. Good luck

Your fan's 449 cfm should take care of the cooling and the exhaust.....Filter>hood>exhaust fan. As long as you have an opening for passive intake you should be fine. I wouldn't worry about it unless it becomes an issue. Then you can add an intake if needed.

yeah that works too. The only reason I was going left is so it has further to travel left to right until exhaust.....so, it would have more time to cool the area.

Ok then either blue 1, orange 1, or blue 1, yellow 2 make the most sense to me.

lol...ok now I get it....still 1 or 2 since it's cold air. Good luck

I would say 1 or 2...you have (2) 2's....so 1 or the Yellow 2...that is my vote since it is cold air.

ok...a chart/dia will help.

ok I see now. In that case why not at the very top even above the light. Cold air will fall so that should help with overall cooling. Good luck

If you are exhausting from the top of the room, intake from the bottom. Not sure about the outlet.

http://www.growweedeasy.com/nutrient-burn-cannabis No

Well you just wanna match it up. So the cfm of the filter should be 200 or above, because that is the space you are working with. Then you match the fan to the filter. So like 1/minute. I'd say you're good as long as your filter is the correct rating and perhaps you dial your fan down. You...

You don't need to 'y' it. Filter>Hood>Exhaust fan/out 5x5x8 = 200 cubic feet. So with that fan you will be turning the air twice/minute. You may need a speed controller for you fan to dial it down.

Yes you need a ballast, but a 250 ballast is pretty small and I'm sure there are fixtures with a built in ballast. No those won't work for HPS.

A 250 watt HPS would do better than the 300 watt total CFL's.

Read up. http://www.growweedeasy.com/scrog-tutorial

I've never tried to make my own carbon filter before. I have always thought that I couldn't get the carbon to pack tightly enough to capture the odors. I use Phresh filters and only run it on a 12/12. I only notice smells seeping out when the lights/fan are off. Make sure that you aren't...