Is it normal for a HPS bulb to start bright white/flicker then it turns yellow?

Discussion in 'First Time Marijuana Growers' started by james.wolverine97, Jan 16, 2015.

  1. I've never seen or used a HPS before and It flickers at the start then it starts and the colour is white and then it turns yellow. (400w)
    I want to know if it's normal or damaged

  2. It's normal. I'm an electrician. It's standard for high pressure sodium

    Sent from my iPhone using Grasscity Forum
  3. Thanks mate. 

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