Metal Halide Lighting ?

Mike 1911A1 · 07/08/2007, 04:29 PM

I've got two 150w metal halide de lights. The bulbs are about 4 months old. In the last week or so, i've noticed that the right bulb will come on in the morning for a minute or so then shut off. Once it cools, it comes on again. Sometimes it will go on/off 2 or three times before it stays on??? Does anyone have any idea what this behavior is? Any help is appreciated.

Mike

snulma1 · 07/08/2007, 05:43 PM

Check the bulbs seating. It may be loose, so when it loses power, the bulb won't fire up till it cools again. Either that or you may have a loose connection if it was a DIY project!

MeuserReef · 07/08/2007, 05:49 PM

Sounds like it could also be a ballast issue. Thats what usually happens to the street lights when they start to turn on and off.

07/08/2007, 04:29 PM	#1
Mike 1911A1 Registered Member Join Date: Jan 2006 Location: North Carolina Posts: 324	Metal Halide Lighting ? I've got two 150w metal halide de lights. The bulbs are about 4 months old. In the last week or so, i've noticed that the right bulb will come on in the morning for a minute or so then shut off. Once it cools, it comes on again. Sometimes it will go on/off 2 or three times before it stays on??? Does anyone have any idea what this behavior is? Any help is appreciated. Mike

07/08/2007, 05:49 PM	#3
MeuserReef Welcome to the next level Join Date: Aug 2005 Posts: 2,412	Sounds like it could also be a ballast issue. Thats what usually happens to the street lights when they start to turn on and off. __________________ "Never be afraid to do something new. Remember, amateurs built the ark; professionals built the titanic." -Anonymous Current Tank Info: tankless

07/08/2007, 05:43 PM	#2
snulma1 Registered Member Join Date: May 2005 Location: New York, NY Posts: 2,281	Check the bulbs seating. It may be loose, so when it loses power, the bulb won't fire up till it cools again. Either that or you may have a loose connection if it was a DIY project!