Chlorine is mainly used as a form of treatment in most water facility. The water supply which is being used in homes and other establishments is often treated with it. It may not harm humans but it is very toxic to koi. In fact it is considered as the deadliest mineral and must always be eliminated or neutralized. So before adding water to your pond, make sure it is free of chlorine.
The quality of water is affected by various elements. The most common reason for the development of contaminants is improper feeding practices. You should be aware that overfeeding can increase the level of ammonia in the pond. Ammonia is a by-product primarily produced from excreted fish feces. Its presence especially in large amounts can be lethal to koi fish. Accumulated ammonia can predispose your fish to acquire bacterial infections and parasitic infestations.
Nitrites and nitrates are by-products of the nitrogen cycle which is a natural occurring life process within the pond. When present at increased levels it may pose health risks to your fish. Nitrite is produced by the bacteria called Nitrosomonas which is responsible for breaking down ammonia. Therefore consistent monitoring is advised to ensure it is within acceptable levels. As much as possible, its level reading should be kept to 0. Nitrates on the other hand are less harmful as compared to nitrites. It is the final product of the nitrogen cycle wherein nitrosomonas converts nitrite into nitrate. The presence of plants and algae can help maintain admissible nitrate levels.
Harmful minerals to koi fish can be decreased if not eliminated with the aid of a filtering system. Different types of filtration system such as biological and mechanical filter are used to eliminate debris and other forms of by-products which are produced within the pond. Regular monitoring of water is also encouraged to ensure that its parameters are within applicable levels. You should always check for an increase in pH, nitrite, nitrate and ammonia levels. High levels are often indicative of poor filtration and presence of waste products. Checking the water in a weekly basis is therefore advised.
Having good water quality is certainly the key to a successful koi pond. Clean and well filtered water which is free from bacteria, wastes and other harmful substance directly reflects a healthy pond.
Finally! Your questions answered, the Koi fish jargon demystified, the complex tasks made simple, quick, cheap and painless... How to Care For Koi Fish
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