d1amond

The titles says it all. But how careful should I be misting around my 1000w hps? The plants come quite close to it in areas.

bluecheese

Any moisture contacting the bulb is likely to cause an explosion of the bulb.

__________________
cheese

Posting Guidelines -- AUP -- Sick Plant? -- Nursery Troubleshooting Guide
Plant Abuse Guide -- St0ney's pH Chart -- Reputation & Thanks

My Journals

SirTokeAlot420

I have accidently misted my 400 watt hps after being on for weeks and mine didnt explode but that's not saying it can't happen. Just be careful when misting near it. Cheers!

__________________
America land of the free, free to the power of the people in uniform

Hunter S. Thompson: When the going gets tough, act like a goddamn professional.

afterburner

^^ What she said ^^

^^ Also done the same thing, with no explosion thankfully ^^

If there is no glass protection of a hood or cooltube definetly turn out your light before misting. You are taking a great risk by not doing so.

-AB

xxmind0vermatte

why are you guys misting your plants? the water droplets on the leaves act as little magnifying glasses and burn your plant. dont mist your plant. just water it and water right before the light cycle goes on again.

Rhino1973

That 1000w HPS bulb is so hot that a "mist" is most likely going to evaporate before touching the bulb. It would have to be more like a spray then a mist. Needless to say though, you should be very careful when working with water around electricity. It is just common sense.

__________________

plastik

This shouldn't be a problem, the misting I mean. JUST DON'T MIST DURING LIGHTS ON. you shouldn't anyways, since the water does magnify the light and cause burns. sure, you can get away with a few little droplets here and there without problems, or even touch the bulb, but when it finally does explode..you are going to be burned SOO bad, it's not even funny. you'll have heated glass imbedded in your skin, among other heated objects within the light. Your really don't have to mist your plants at all. the dryer the plants surface, the better...because if you keep it like that, in the end, you will have a better plant, and better buds.

when I mist, I spray downward, and I do it without a fan blowing, so the mist doesn't get blown into the light. but I rarely mist, especially with the lights on. do it right after lights off.

Also I read in a news article a while back that some guy was misting his marijuana plants under a couple thousand watt lights, and one exploded on him, RIGHT IN HIS FACE. the dude was blinded from hot shards of glass basically boiling his eyes. it gets worse...since he couldn't see, he had to get paramedics there by crawling his way blindly to the phone. needless to say, they found his marijuana plants (but severely damaged just like him), and HE STILL GOT CHARGED WITH THEM. now dude is blind and in prison, so go figure.

the Viper

hoods with glass inserts are required for UL listing in a residence. that should tell ya something right there.

I raise my lights all the way up to foliar feed or spray my plants, and leave em up till the plants no longer have droplets on them to act as magnifiers. I did make that mistake once, the water formed droplets at the center of the fan leaves and burnt a few... they did recover pretty well though, no big deal.

tell ya what, try this experiment- put a drinking glass in the oven and bring it up to about 400 degrees- then pull it out (with gloves) and spray it with room temperature water-It will break. thats what the glass protecting the bulb can do, and its hotter than 400 degrees Ill bet.

__________________
25JHXG13 soldiers,
My Grow Journal,indoor soil

VoxLumina

I would just take Viper's word for it instead of breaking a glass. That very well could also end up in injury. I was just reading about misting around HID's on this FAQ:

http://www.drugs-forum.com/growfaq/G...c%20Topics.htm

Even 150w HPS/MH bulbs get hot enough to crack or explode from misting. If you're going to do it with the lights off, make sure there are no droplets on the bulb at all, because when it comes back on, it could very well be destroyed.

Skip Intro

I've heard this little anecdote time and time again, but I've never found it to be true in practice. I mist all the time when combatting low RH and have never seen the supposed water-droplet-prism burn.

In my mind, this theory has three strikes against it:
1 - The droplet doesn't have the surface area to gather enough light to burn a plant.
2 - The focal length (between the droplet and the surface of the plant) is practically nil.
3 - Under HID lighting, the droplet doesn't stay on the leaf surface long enough to burn the plant even if 1 & 2 weren't a factor.

So I guess I'm calling BS on the above piece of mj growing lore. Anybody have any counter evidence?

__________________