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Biological filtration convert toxic nutrients (Nitrites and Ammonia) to Nitrates, a nutrient low in toxicity which plants use for growth through the use of good bacteria found naturally in every pond. This is done in a process is called nitrification. There are two types of bacteria responsible for this process, Nitrosomonas and nitrobacter.
In most fishponds, the waste and nutrients released are too great for the amount of bacteria present. Biological filtration systems have worked out a way to increase the amount of benificial bacteria in your pond.
Nitrosomonas and Nitrobacter live on every surface of the pond, on the rocks, leaves, logs etc. So to increase the number of bacteria, we must provide them with a greater surface area to grow on. Biological filter media, such as bioballs, designed with a massive surface area and stored inside a filter box creates this space to grow. Water pumped through the filter box flows past billions of beneifical bacteria housed within the filter media. This bacteria works together to convert the nutrients into safer forms.
Biological Filtration is The Fish Works area of expertise. We have built filters for literally hundreds of fish ponds in NSW, tailor-made to achieve crystal clear water and a healthy environment for fish to live and thrive in.
We stock a wide range of biofilters for water features and fish ponds of all sizes.