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This is a wierd ? But i make neon signs and other types of signs. I have the ability to ge really cheap equipment because i am a manufacturer. Would neon tubing (red tube, and blue tube) work as a grow light?

hey guys, my plants are 5 days old and they have 2 smooth leave and 2 rough. Would it be okay to switch to a 400w HPS? I have a fan on, and the temp is staying at 69