Replacing Spectrum Tubes Steve Lingle April 09, 2021 11:57 Updated Follow This video explains how to replace the spectrum tubes in your BioCharger. Related articles There is a black mark under the spectrum tube How long will Spectrum Tubes last? What is this dark band on the top/bottom of my spectrum tube? BioCharger Onboarding - What are my next steps? Handling the Spectrum Tubes Comments 0 comments Please sign in to leave a comment.