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Koi Pond Filtration


 

When considering being a Koi keeper you need a good koi pond filtration system in place as these fish are big feeders and grow into large specimens. In return they produce huge amounts of waste which can quickly build up at the bottom of your pond.

You can have an artificial pond successfully reproduce a natural balance if it is stocked with plants, a sensible number of fish and receives a good amount of sunlight. The trouble is most garden ponds tend to be unbalanced due to people having overstocked in fish or........in this case Koi will tend to eat and kill most plants that have been introduced so a pump, aeration and filtration system is needed.

Filtration Process

The filtration process is where waste is removed or converted into a less harmful substance or unwanted debris is removed from the pond. By doing this the pump is aiming to establish and maintain a healthy water condition for your fish.

Pond Filtration system

The 3 types of Filtration

Biological

This is a natural filtration system where the filter supports aerobic bacteria that converts toxic ammonia which comes from organic waste into a less harmful substance called Nitrites. Then nitrites into nitrates which the pond plants love and feed on. Then in return the plants provide protein giving the wildlife a source of food.

Chemical

This filter commonly uses zeolite and carbon which will remove organic waste and carbon dioxide from the water as if passes through this system.

Mechanical

This system just removes all debris and waste from the pond with filters, gravel or sponges which can be removed and washed with warm water.

There are other aids to filtration..

Ultra-violet

This helps remove pathogenic micro-organisms and helps destroy green water. UV is not an essential need even though a lot of people will tell you different.

Magnetic Treatment

This helps reduce limescale, but in return will not help your plants grow and give you a fluctuating pH of the pond.

When using the above filtration systems together, have the water pump through the filter systems in the correct order. Mechanical then Chemical and finally Biological will give you maximum effect.

There are internal and external pumps and filtration systems, but more common in Koi ponds is the internal filter incorporated into the concrete, block or bricked ponds. This must be planned at the same time the pond is designed. You require a retaining wall, hidden underground pipe work and the actual filter system itself can take up a large amount of your pond bottom.

This system requires skill and knowledge. I would use an experienced professional.

But there is a simpler version available today which can easily be installed within a retaining barrier or wall or just placed on the bottom of your pond.

When choosing a pump for your Koi pond filtration system it needs to pump the whole volume of your pond about every 2 to 3 hours.

Insure that the pump is strong enough to pump the water up to a cascade or waterfall if you are planning on having one.

I will not go to deep into Koi pond filtration and aeration as I have a whole section on this, but just remember that not having plants in a pond and with Koi producing so much waste is that you need a very good system in place.

Also see Vortex Chamber

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