swap the 9w for a 5w bulb

  • We are currently upgrading MFK. thanks! -neo
  1. T

    UV Bulb Change?

    I have a 9w UV sterilizer and am setting up a 29 gal. tank which really needs only a 5w unit. Since mine takes a G23 base, could I just swap the 9w for a 5w bulb? Or does the ballast have to be changed too? Any knowledge would be appreciated! Thanks!
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