Laguna Submersible pond filters are simple to install and generally provide a combination of mechanical and biological filtration to keep ponds clean and the fish healthy. The units are placed directly into your pond and are useful for smaller ponds.Read more
Laguna PowerFlo underwater filters do an excellent job of keeping ponds clean - up to 800 US Gallons
Water is drawn through submersible pond filters by a submersible pump, which can be attached to the filter either internally or externally and then discharged into the pond. Because they tend to pick up all the debris from the pond bottom, submersible pond filters protect the pump from clogging and keep the water clean and clear.
Laguna internal filters are easy to install and can be well hidden with planting baskets. All filters should be powered by a solids handling pump that can turn your total pond volume at least once every two hours.