A pond vacuum is a very useful and simple tool that can help keep small ponds or water gardens healthy and attractive. Vacuuming a pond can dramatically improve the appearance of a small pond, hinder algae growth, and reduce the load placed on the pond’s biological filter.
In the same way that dust and pollen settle out of the air, suspended materials are constantly settling onto the floor of a pond. Fish wastes, dead insects, fallen leaves, and the dust and pollen that land on the water’s surface all eventually find their way to the pond bottom. The accumulation can be unattractive, and decomposition can change the water chemistry. When biological filters ultimately convert the materials to nitrates, the scene is set for algae to flourish.
Removing these materials prior to decomposition reduces nutrient production and hinders uncontrolled algae growth. Removal also brightens the subsurface appearance of the pond and makes fish more visible from above.
A pond vacuum cleaner typically looks like a standard wet/dry shop vacuum. The collection canister and vacuum source remain outside of the pond, and a telescoping tube is extended into the pond. Muck and debris from the pond, along with pond water, are drawn up to the collection canister through the tube. The collection canister usually has a means to filter the water and return it to the pond, but some systems are designed to simply dispose of everything that is collected.