broken MH - Grow Room Safety - International Cannagraphic Magazine Forums

blak · 08-13-2013, 06:48 AM

This is what happened to my 1000 mh bulb. The glass fell off and the light kept burning, going on and off with the timer for 5 days. When I came to look in on them, the plants were all fried from the uv rays. End of story for that crop, which was two weeks into flowering. This ever happen to anyone else?

hope my picture showed up here?

LEDfoot · 08-13-2013, 06:53 AM

"Nice" picture. Was that a generic lamp? Mishandled in the past, perhaps? Guess folks aren't kidding when they say not to run a unit with cracked glass.

thanks for posting, blak

Hazy brain · 10-18-2013, 10:21 PM

Good pic blak, I'd suggest you check on your plants more often if you can. I know it might be difficult but nothing substitutes for the human being being on site. UV burn must've cooked those poor plants. Such a waste!

10-24-2013, 08:13 PM

sucks a lot.. but ur lucky it didn't burn ur house down .

ydijadoit · 10-24-2013, 08:32 PM

One of my worst fears. I have had one MH and two HPS bulbs fail, but both just quit, without any drama.
I only run enclosed hoods, with tempered glass, in the hopes of containing a blowout like you had.
I try to keep anything easily ignited off the floor, and also installed "Flame Defender" units.
Make sure you are giving your halides a "Rest" period, of at least a half hour, once a week or more. I don't understand exactly what goes on in these bulbs, but every halide I have used, said to give them a rest, on the package. Supposed to reduce the chance of catastrophic bulb failure.
I'll take them at their word on that one.
Very glad to hear things worked out. I bet your hands will shake for a couple days!
Regards

ydijadoit · 10-24-2013, 09:46 PM

One other thing to consider... Was that bulb rated for vertical operation? The way it failed, it looks like it must have been hanging vertically.
There are position ratings on halides, and it would be easy to get the wrong one for your application.
Regards

HidingInTheHaze · 10-24-2013, 10:04 PM

Do a thorough cleaning of the grow area underneath where the bulb was because that thing was pressurized with mercury powder before it cracked and it most likely went over your grow area when it broke.

08-13-2013, 06:48 AM	#1
blak New Member Join Date: Jan 2005 Location: 52 North Posts: 3	broken MH This is what happened to my 1000 mh bulb. The glass fell off and the light kept burning, going on and off with the timer for 5 days. When I came to look in on them, the plants were all fried from the uv rays. End of story for that crop, which was two weeks into flowering. This ever happen to anyone else? hope my picture showed up here? Attached Thumbnails
	Quote

08-13-2013, 06:53 AM	#2
LEDfoot Member Join Date: Jun 2013 Posts: 125	"Nice" picture. Was that a generic lamp? Mishandled in the past, perhaps? Guess folks aren't kidding when they say not to run a unit with cracked glass. thanks for posting, blak
	Quote

10-18-2013, 10:21 PM	#3
Hazy brain Newbie Join Date: Aug 2013 Posts: 27	Good pic blak, I'd suggest you check on your plants more often if you can. I know it might be difficult but nothing substitutes for the human being being on site. UV burn must've cooked those poor plants. Such a waste!
	Quote

10-24-2013, 08:13 PM	#4
AlterEgo860 Guest Posts: n/a	sucks a lot.. but ur lucky it didn't burn ur house down .
	Quote

10-24-2013, 08:32 PM	#5
ydijadoit Member Join Date: Aug 2009 Posts: 234	One of my worst fears. I have had one MH and two HPS bulbs fail, but both just quit, without any drama. I only run enclosed hoods, with tempered glass, in the hopes of containing a blowout like you had. I try to keep anything easily ignited off the floor, and also installed "Flame Defender" units. Make sure you are giving your halides a "Rest" period, of at least a half hour, once a week or more. I don't understand exactly what goes on in these bulbs, but every halide I have used, said to give them a rest, on the package. Supposed to reduce the chance of catastrophic bulb failure. I'll take them at their word on that one. Very glad to hear things worked out. I bet your hands will shake for a couple days! Regards
	Quote

10-24-2013, 09:46 PM	#6
ydijadoit Member Join Date: Aug 2009 Posts: 234	One other thing to consider... Was that bulb rated for vertical operation? The way it failed, it looks like it must have been hanging vertically. There are position ratings on halides, and it would be easy to get the wrong one for your application. Regards
	Quote

10-24-2013, 10:04 PM	#7
HidingInTheHaze Banned Join Date: Feb 2013 Posts: 2,959	Do a thorough cleaning of the grow area underneath where the bulb was because that thing was pressurized with mercury powder before it cracked and it most likely went over your grow area when it broke.
	Quote