Our 800 gallon pond currently houses 19 koi, many water plants, and surrounding rocks which are home to many chipmunks. The pond has a high volume of algae after several treatments of Algae Off, removal of 40% of the plant coverage and daily cleaning of the filter. Since some of the koi are over 20 inches, it is clear we have too many fish for the volume of water, especially with the extreme heat this summer. Where to and how should we transport at least half of our koi population to improve the health of the remaining fish and pond? Your advice on this issue would be greatly appreciated.