600w HPS with no heat venting

[Revanche21]

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?

[oldmac]

Revanche,

If your're not going to cool the light, leave the glass off, it probably will overheat the bulb with it in place.

I use a lighting controller by Sentinel that has a great feature for people using it to control air or water cooled HIDs. It contains a temperture probe to place over a light. You then set the normal run temp with the lights on, and if they go above that by 10 or so degrees it shuts the lights down. So if you have a cooling failure, lights shut down before damage happens to lights or surrounding areas. It also has a cool down time out cycle, so that if electric goes off and comes back on, the lights won't try to re-light till they cool down.

[TurboALLWD]

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!

[Revanche21]

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!

Thx for the input!

[JeffersonBud]

That bulb is an HID bulb. It can withstand those temps. A lot of people use the glass for safety incase the bulb blows or is hit and cracks. Hot chards on dry plants is not a good idea. You can leave the glass on or take it off. Its whatever you want.

[TurboALLWD]

Thx for the input!

No problem at all! my pleasure.



That bulb is an HID bulb. It can withstand those temps. A lot of people use the glass for safety incase the bulb blows or is hit and cracks. Hot chards on dry plants is not a good idea. You can leave the glass on or take it off. Its whatever you want.

Jefferson: You have just confirmed what i considered common sense, but i wasn't confident enough to say it. Definitely makes sense that the HID was designed to handle the temps, and as much as i bump my light its a good thing i keep the glass on! thanks for the info! definitely appreciated.

[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?