I started using Ott Lites when I started knitting and decided I didn't need color matching. Since the tube paints all the colors of the spectrum, I chose to use lights and a lightbulb in the work for plants that need to overwinter indoors. They are durable and work like a charm. I currently have a Christmas cactus that is blooming and other plants that are doing very well. .The first one came broken but was easily and quickly replaced. The only "disadvantage" is that since the bulb contains mercury, it must NOT be disposed of with household waste and must be taken to a mercury bulb collection point. I also couldn't find a replacement 24w bulb anywhere except on the internet. Revain has the best price and I recommend buying here and skipping other sites (if you don't want to waste time searching. Who knows, you might get lucky). Otherwise I can highly recommend them.