Filtration

Aquariums are closed systems, without the continuous replacement of water that occurs naturally in rivers, ponds, lakes or streams. Waste products, uneaten food and decaying plant matter accumulate, stressing fish and causing illness or even death. A filtration system removes many waste products, improving water quality and keeping fish healthy. Filters also help keep water clearer so fish are easier to see and enjoy.

Aquarium filters use different filtering materials, methods and systems to do their work. Regardless of the type, strength or degree of sophistication of the filtering system used, no filter can remove all waste products. Frequent partial water changes are a must for healthy fish.

for information on filtration methods, materials and filter types.