Freshwater Aquarium Filters - What To Choose | Fishtanks Blog
In-Tank filters also called corner or box filters are among the first filter designs. The filter medium varies in texture from coarse to fine, large particles are removed first by the coarse filter and then small particles are removed by the fine filter. A siphon tube conected to a canister and pump pulls water outof the tank and through the canister and a return tube puts the water back in. Usually the canister contains coarse ceramic ‘donuts’ or a coarse fibre, perhaps some chemical filtration... Biological, mechanical and chemical filtering are all perfomed by a cannister filter. Most of the modern filters used today are based upon these filters. Fish in such high numbers produce far more waste than the resident bacteria can possibly cope with so even changing one third of the tank water every week is not sufficient to keep the water clean. By that I mean that they are able to reach equilibrium whereby the fish population adjusts according to conditions and fish excreta is all dealt with biologically and there is no build up of ammonia, nitrites and nitrates making the water... Cannister filters are great at keeping your tank water crystal clear. Fish excreta turns into ammonia which is very poisonous to the fish. This means that all of the fouled filter media actually begins adding nitrogenous waste back into the water instead of removing it. This results in algae bloom and poor water quality. The main reason is because we all like to fill our tanks with a density of fish which far exceeds that found in the natural world. Undergravel filters (UGFs) comprise a grid of plastic pipes with small holes every centimetre or so. The grid is situated under the substrate or gravel thus creating a water space there. Normally powered by an air pump they work by pulling water through a variety of filter media. Water is slowly pulled through the gravel into the filter pipes by up to four ‘air lifts’. Also you should add an airstone and pump to oxygenate the water since cannister filters are completely enclosed. The disadvantages of these filters is that they are not cheap, they use costly media and they require to be maintained every month. As a consequence you must regularly use a siphonic hoover on the gravel and at least twice a year completely clean the filter. As well as this the small holes in the filter get blocked and waste tends to accumulate because it is not all broken down. Activated charcoal or ion exchange resins are used in chemical filters. How do Freshwater Aquarium Filters work. It is for this reason that undergravel filters are not as popular as they used to be. 3. Freshwater Aquarium Filters - What To Choose Posted on 01. In addition it is imperative that you have a freshwater aquarium filter of some kinf....
Andon designed a filtration system just for jellyfish which would keep them afloat and away from standard fish tank filters which can liquefy them.