Glad to of found what seems to be a great community for Koi Pond enthusiasts! I currently have a 10'x4' Pond (approx.) and am having some serious algae issues and am looking for some help in that area. However, I am also looking to build another pond in a much more shaded area that will be 19'Lx8'Wx3'D and will be making that my main Pond while turning the other into a breeding pond. This will take some time as I am doing it with a shovel and axe (roots). In the mean time I need to figure out how to control my algae issue. I should inform you that it is in the sun most of the day and has about 24-27 fish in it most are no bigger then 2-3" but about 6 -7 of them are around 8-10". Also I have stopped feeding them due to the algae growth. Help!