How long do MH bulbs last?

[Brad]

How long do MH bulbs last? Is there any way of knowing if they've lost their punch...or do they just die suddenly.

I've got a 175 10K that is just about 1 year old now.

 

[EL Diablo]

They may look good as new but I've heard they should be changed once per year.

 

[fishfreek]

Yes MH bulbs should be changed out yearly. They wont suddenly die unless they are very old but their overall output will be lower than when first installed.

 

[revhtree]

Make sure and keep the old one around, just in case you loose a new one before it's time.

 

[scuba_steve]

or pick up a cheap ballast can use old bulbs for your fuge

 

[revhtree]

or pick up a cheap ballast can use old bulbs for your fuge

Now thats an idea!!!

 

[Brad]

Picking up a cheap MH ballast sounds good...but where are you likely to find that?

 

[MT79]

You may want to try www.diyreef.com or Darin at www.captivereefs.com I saw a 175w ballast for $77.00 plus you get 6% off from Darin.