The type of fountain you should choose ultimately depends on your needs. (Aeration, decoration, or both!) If the goal is to aerate the pond, your best bet would be one of our aerating fountains. If you are mainly looking for a decorative display, go with one of our decorative fountains.
At the end of the day, both fountain types will still improve the health of your pond. Increasing oxygen and reducing stagnation are the first steps to a healthy ecosystem.