I grow ornamental trees for wholesale and use my pond extensively for irrigation. Drip is the only way to go if you have alot of trees, poly pipe and the components are cheap and it will save you many hours of work. I would highly recommend a "disc filter" with the appropriate micron rating, they are much easier to clean than a mesh filter. (don't try and save pennies on the filter). I purchase most of my supplies from
www.dripworksusa.com as they carry a wide variety of items and are very reasonably priced.
