Started in April 2006, Hole dug August/September 2006 (25 cu. yds. removed). Pond filled October 2006. 6480 Gallons. Five up-flow 55-gallon barrel filters. Barrels #2-5 fed by Sequence external 5800 pump. 11 out-flow spots in water wall. Two 4" bottom drains. Two mixing eductors. Skimmer with external Dolphin 3500 pump. Home to 25 koi range in size 3" to 24".