I have a 1300 gallon pond, about 12 feet in diameter lined with elephant ears, various plants, plenty of river rock and flagstone, 2 waterfalls and a spitter frog. I had several comets in it and a few leopard frogs. It had plenty of oxigenator plants and other plants local to this area like water lettuce, hyacinths and cattails. Springtime was a chore fighting the algae even though I had barley bales in the water as well as ultra violet filtering and regular filter with media. Fortunately I managed to keep it under control. I had to drain it after 3 years of use due to our electric company raising rates and my wife losing her job due to her disability. I gave the plants and fish away to a friend and he still has them in his pond. Everything else is still intact and hopefully I'll get my pond up and running again one day in the future.