Hortilux blue closed or open hood?

Ive got some hortilux blues, 600 Watts. The eyehortilux website says the bulbs have to be used with open enclosures. They haven't gotten back to my email.
Has anyone used these bulbs in enclosed hoods? IE hoods with a glass pane.
Thanks.

Apical Bud said:

Ive got some hortilux blues, 600 Watts. The eyehortilux website says the bulbs have to be used with open enclosures. They haven't gotten back to my email.
Has anyone used these bulbs in enclosed hoods? IE hoods with a glass pane.
Thanks.

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I've used 1ks in enclosed air cooled hoods

Apical Bud said:

Ive got some hortilux blues, 600 Watts. The eyehortilux website says the bulbs have to be used with open enclosures. They haven't gotten back to my email.
Has anyone used these bulbs in enclosed hoods? IE hoods with a glass pane.
Thanks.

Click to expand...

It's fine in an enclosed fixture, actually preferred for most MH bulbs as they are NOT open fixture rated. I think horti blues have a glass shroud around the arc to protect from catastrophic failure. The glass pane will add 10+% loss when new/clean though.......something to think about

good luck grower

It runs in a sealed hood unless it is open rated. Venting that hood allows you to remove excess heat, but the two concepts are otherwise unrelated.

Thanks for the answers guys!

I run mine in open hoods,have for long time,careful with sprayers

I have a 600 in a closed hood. It's fine

thumper60 said:

I run mine in open hoods,have for long time,careful with sprayers

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How do you vent your open hood

I ran closed hoods for my first couple of years of growing until I worked on a grow that used open hoods. From what I've seen, it seems like the investment you have to make into a quality ac so that you can run open hoods is totally worth it. Closed hoods, with exhaust fans don't cool enough to be worth it to me. If you're only growing with one or two lights the closed hoods are fine. But if you have three or more lights I would leave them open and get an ac hooked up. Your plants will thank you!