Koi fish farming methods and precautions: control density, change water regularly, feed properly, and have appropriate lighting.
1. Control the density
To breed koi, you must first control the density. It is incorrect to raise too many koi in a small tank as this will cause them to grow poorly. Generally speaking, if the size of the fish tank is 60×30×15 cm, the number of koi that can be cultured is about 6, and you cannot raise too many.
2. Change the water regularly
When raising koi, it is also very important to maintain suitable water quality. Therefore, it is necessary to change the water regularly and clean the impurities in the fish tank to provide a clean environment for the growth of koi.
Specifically, the frequency of water changes can be controlled at 3-7 days. Water changes need to be more frequent in summer, and the intervals can be slightly longer in winter. Each time you change the water, you can replace one-third. In order to ensure that the water temperature does not change drastically, it is necessary to control the flow rate of the water and slowly inject new water.
3. Reasonable feeding
Normal feeding methods need to be adopted. First of all, you must choose good food. Koi is omnivorous, so try not to only use one kind of food, which may cause insufficient nutrition. You can combine plant and animal foods, such as vegetables, earthworms, red worms, etc. Feeding can be done once or twice a day, once in the morning and once in the afternoon.
4. Suitable light
When raising koi, a certain amount of light needs to be provided every day. Especially if there are other plants in the fish tank, light needs to be provided to allow them to perform photosynthesis. However, in summer, considering that the light is relatively strong, they can be properly shaded.
5. Key points to note
In winter, special treatment can be carried out to allow koi to survive the winter, placing them in a pool with a water temperature of 5-10 degrees. At this time, the feeding frequency does not need to be too many, just once every 3-5 days.