At the same time you also need to consider though that custom aquariums require a lot more upkeep by the same token and that you will need to work harder to maintain them - where as something like a water fall requires minimal water feature maintenance. Other factors like space and cost will also of course affect your decision – it may be that you simply can`t afford a large water feature and a fountain is something more appropriate. Various water features might also be more suitable for different locations in different ways. For example if you are trying to create a kind of tropical theme for your room then a water fall will help make it feel natural and tropical. Meanwhile if you want a more nautical feeling (which is currently very fashionable) then an aquarium will be very suitable. Make sure then that you spend time and look around at your various options while deciding on your water features.