A pond pump is connected to the electrical supply and submerged at the bottom of the pond. It provides all the power to circulate the water through the filter, waterfalls, fountains, ornaments, and uv sterilizer units.
The proper pump and circulation system is very important for the ecosystem of your pond. It must push or pull adequate water through the filter, repeatedly passing all of the necessary filtering stages to clean the water. Pumps that also power waterfalls and fountains provide oxygen levels for healthy fish and plants and also discourage mosquito populations.
Most pond owners choose a slightly more powerful pond pump than necessary, as it is less expensive to invest in a single pond pump than to re-invest if your needs grow with your imagination. Contrary to popular opinion, higher pumping capacity will not diminish the biological activity of the filter. Read More HERE