How To Take Good Care Of Koi Fish. To flourish and thrive long-term koi fish need clean filtered water in their ponds. The rule goes a koi pond should hold 500 to 1000 gallons of water for every adult koi it carries.
So you should observe the Koi in the tank for approximately 14 to 21 days. The rule of thumb with these fish is to keep 10 gallons of water for every inch of fully grown Koi. The koi must be transferred first to clean buckets with fresh water so you can more easily clean out all the debris and thoroughly scrub the walls of the pond.
Therefore keep their pond water clean aerated and balanced.
Of course starving your koi fish is not a good idea but koi fish can stay healthy with less food than what most people think. The koi must be transferred first to clean buckets with fresh water so you can more easily clean out all the debris and thoroughly scrub the walls of the pond. When you purchase Koi from a pet store it is important that you quarantine it before putting it together with the other fish. You will also want to get a big tank to prevent overcrowding.