600w HPS with no heat venting

[oldmac]

Well, I've had my 600w hps running for a month now with the glass in place without venting. I have my 8in wind tunnel pushing 700cfm's out of the grow room constantly and the room is less than 700 so that could be why I can hold my hand on the glass without getting burned. I have two 1yr old bulbs so im not too scared about blowing a bulb. Maybe someone can convince me to pull the glass out with their past experiences but so far no problems!

My advice to most people is that if your exhaust fan runs more then 50% of the time your lights are on, then it's time to cool those lights.

Your method will work, but you lose the ability to use CO2.

I was probably not the best to answer that anyway...I haven't used an HPS bulb in a year. And speaking of a year.....don't you think it's time for a new bulb?

oldmac Reviewed by oldmac on 11-20-2008. 600w HPS with no heat venting Is it ok to put the lens on one of these without heat ventilation? or would it better to just leave it without the lens? I guess my real question is; would the heat building up within the HPS because of the lens, be too much heat for the bulb? Rating: 5