You should dig a pit deep enough to deal with a pump and hold enough water for circulation of blood. Make sure that the well pumps you are buying are durable and will certainly last lengthy time. Submersible or External Gadget? Submersible pumps are fine for smaller volume ponds. http://bom-chim-cong-suat-lon15747.mpeblog.com/34019721/outdoor-pond-pump-vital-for-the-sake-of-your-pond-and-your-koi