The filter stocking is one of the most efficient and convenient mechanical filtration methods. With their help, it is easy to get rid of the remnants of uneaten food, detritus, organic contamination and other tiny inclusions. Removing dirt particles from the water will reduce the amount of organic material that is the source of ammonia and other unwanted substances in the aquarium. Filter stockings also help prevent larger objects such as sand, crabs, shellfish, etc. from entering the pump, which will prevent the pump from damaging its motor. The systematic use of a filter stocking will reduce the level of organic stress on your aquarium system and, as a result, provide crystally clean water!