No mate it's all gravity fed so should be no need for pumps
you'll still need to pump water on a gravity fed system, to create a flowThanks for the heads up pal but your too slow lol it's your old age mate. How's things?
sound mate, my last koi pond was just over 5000 gallon
cost me a small fortune, heated, sand filters the works
thinking of moving if I do i'll do another one