my plants are right in the hood with my 1000wtt. but i have a 20 inch box fan that hangs at light level to blow the heat away from the top of my plants. been doing this for 2 year and have not burned a cola yet. i run it on high when light is onI am building a 5' wide, 4' deep, 5' high and i am wondering if 18 inches is enough between the bulb and the top of the plant?
Thanks.
What kind of ventilation will you be using? That 1000W light is going to get hot as hell in such a small space. I would think a Cool Tube or another air-cooled hood is an absolute must.
I sure hope so, but I have my doubts. The only way to tell for sure is to fire that light up for a few hours, sort of like a dry run. If your temps get hotter than 80 degrees you're going to need a more agressive cooling plan. Another thing, try and take the temperature about 2ft from the bulb. That reading will be about where your canopy will be. You can get it closer with a better hood, but let's see how things go for now.
2x600w should suffice. Cool Tube reflectors would be good too. You can easily connect them to your fan, but you'll need an 8" to 6" fitting because the Cool Tube has 6" ports.I have a question, if someone will oblige.
My flower chamber will be 6' wide, 4' deep, 6' high(all INSIDE measurements). Should I run 2x600w, or 2x1000w? My exhaust for this chamber would be a 500 CFM S&P 8" inline fan. Would that be able to cool this?