"best" brand for MH DE bulbs?

What is everyone's opinion on the best double ended MH bulb's? In every capacity, color, life, etc. Thanks for the imput folks.
 
I also use Pheonix 150w DE MH. I think there is a better one if you have a DE MH 250w. I believe it was the XM or Radiums. As far as life of the bulb, I think the usual schedule is to replace them every 7-8 months, but that also depends on how much you use them.
 
Ok, thanks! Now the "life on the bulb"....... I have a MH bulb that is two years old and still fires up fine, the light has changed temperture it seems but what is the "life of the bulb" refering to specifically? Thanks!
 
I really like aquamaxx or radium. Bulbs should be replaced after a year as par has reduced and spectrum has probable shifted


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two year old bulbs will result in color spectrum change just like kuyatwo said. It'll start giving you nuisance algea and other unwanted growth. I would only use that bulb as a spare incase your new one goes out too early and or to use as troubleshooting incase a ballast should go out.
 
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