I've been thinking of getting one. For stress relief for me, also for my 3-legged cat to watch. I've been thinking of getting a recumbant bike, and thought sitting peddling and looking at an aquarium would be pleasant... I would do freshwater tropical, probably no live plants. Cannot decide what size. if you have one, do the chemicals/ smells/ etc cause any problems? how about lifting water for the water changes, dealing with cleaning filters etc? cause any problems because of having fm?