We just bought the Aroma Gem as our first diffuser and were so excited about it as I finally got my husband on board with essential oils and diffusing. Unfortunately, this diffuser does not cover the range of square footage that it claims to (450 sq ft.) and so we are very disappointed with our purchase. We followed the user instructions exactly as stated seeing as it is our first diffuser, and even tried adding more drops of oil than stated but still, it does not spread throughout our living area which is only around 400 sq ft. We have tried different blends and various locations and have had no luck with it being able to cover much space. We took it back to the store we purchased it from to discuss the issue and find another option but were told we were unable to return/exchange it now that it is used, which I do understand. However, it is really unfortunate that this diffuser does not cover the space that it claims to on the packaging. I would not recommend purchasing this item for anything larger than a small bedroom.
Red Deer, Alberta