A rare find! Freshwater sponge colonizing pond intake filter. Now that’s biological filtration.
Tag:pond filters
Pond Alchemy’s Pond Terminology Aeration– (also called aerification) is the process by which air is circulated through, mixed with or dissolved in a liquid or substance. Examples: Waterfalls, Spitters, Fountains and Air Pumps. Algae Eaters– animals that feed on pond…
