EXTERNAL CANISTER FILTER

How to maintain it to refresh your aquarium ?

Proper management of the nitrogen cycle is a vital element of a successful aquarium. Excretia and other decomposing organic matter produce ammonia which is highly toxic to fish. Bacterial processes oxidize this ammonia into the slightly less toxic nitrites, and these are in turn oxidized toform the much less toxic nitrates. In the natural environment these nitrates are subsequently taken up by plants as fertilizer and this does indeed happen to some extent in an aquarium planted with real plants.

Mechanical and chamical technology :

The process of mechanical filtration removes particulate material from the water column. This particulate matter may include uneaten food, feces or plant or algal debris. Mechanical filtration is typically achieved by passing water through materials which act as a sieve, physically trapping the particulate matter.^[1] Removal of solid waste can be as simple as physical hand netting of debris, and/or involve highly complex equipment.

Power filtaration mathod :

Power or HOB filters, typically powered by an impeller, remove water from the aquarium which is then pushed (or pulled) through a series of different levels of filter media and returned to the aquarium. These are the most common filter.^[1] They are usually more effective and easier to maintain than internal filters. An example would be the Dynaflo 150,a siphon-fed, noisy HOB filter with a magnetic motor systems.^[12]