When you keep fish, particularly Koi, water filtration is one of the most important parts of your whole pond set-up, as it helps to keep it clear of harmful and toxic substances to provide your fish with fresh and healthy water. Koi, in particular, are highly sensitive to any changes that occur in the condition of water and can either become sick or stressed if the quality of water in the pond drops.
Therefore, it should be one of your main concerns as a Koi owners to sustain a stable and healthy water supply for your fish.
The Pond Filtration System
Your pond’s filtration system has the job of pushing the water through various layers of filter media. There are two separate kinds of media you should have, to benefit your fish best, is mechanical and biological.
What is biological media? – This kind of filter media is a variety of different sizes and shapes. However, the most important aspect to look for in biological filter media is that it has a large enough surface area to allow for beneficial bacteria to breed and grow. The actual biological media on its own is now able to decrease the volume of harmful and toxic substances found in a pond, and therefore needs the help of bacteria to filter nitrates and ammonia from the water as it is cycled through the pond filter. A greater amount of bio-filtration is possible if there is a bigger bio-media surface area.
In conjunction with the biological media, there should ideally be a number of layers of mechanical filter media.
What is mechanical media? Mechanical media is used to remove algae and larger pieces of debris that the biological media can’t handle. The most efficient set-up would include mechanical media that is lined up in layers from fine porosity media to coarse porosity. When there is a number of different mechanical media in a pond, it makes sure that no debris gets through, as well as reducing the time and effort on cleaning necessary as the collected debris is spread over a much wider area.
The best pond filters on the market will normally as standard have both mechanical and biological filter media, with the best being designed to maximize the removal of debris and colonization of bacteria.
Features To Look For In A Quality Koi Pond Filter
Sufficient Amount of Biological Filtration
In order to process toxic and harmful substances and ensure there is a good flow of water for oxygen, a large surface area is needed for the colonization of good bacteria. Therefore, it is recommended that you look specifically for a biological filter that has been optimized with good water movement in mind.
Sufficient Amount of Mechanical Filtration
Although biological filtration is undoubtedly the most important form of filter for your pond, as we established earlier, mechanical filtration is still a good thing to have. A multiple layered setup of mechanical media is usually the form this kind of system will take so that you can remove as much debris as possible, regardless of their size or shape.
Maximizes Clarity and Quality of Water
Efficient and effective water filtration will ensure the water in the pond is clear and high quality, but it is wise to make sure the filter you choose will maintain this excellent quality no matter what the time of year is. This means finding one that is easy to maintain, clean and replace/replenish as necessary.