Pond maintenance

                 To provide a healthy and safe environment for koi

     Provide 250-300 gallons of water per 24 inch fish, resist overstocking
     remove fallen leaves and other debris from pond bottom
     keep skimmers and basket strainers from getting clogged with matter
     run biological filter 24 hours a day, keep covered to keep light out
     if the filter medium is gravel, it should be raked once a week to keep it loose . the passage of water
     needs to be unhindered, aerobic bacteria requires a constant flow of oxygen
     biological filters of any media should often be checked for channeling. if the water is allowed to find
     the way of least resistance, the rest of the filter will become stagnant and no oxygen is provided for
     the aerobic bacteria
     periodically back wash biological filter
     feed fish only as much as they eat within three minutes
     make sure that food pellets are fresh
     store food in air tight containers to keep from oxidizing
     during the winter months do not feed if water is below 54 degrees
     replace 10% of pond volume with fresh water per week, making sure that the chlorin or chloramine
     content of the replacement water is neutralized or removed
     some pumps and also the lids of some basket strainers need to be periodically lubricated. follow
     manufacturer's recommendations
     keep area around pump free of leaves and other debris

    the area of a fishpond should be fenced to keep small children from coming to harm!
 

                from a Koi friend from the States :Helmholz