My koi pond we are just finishing up.
apx 20' long X 7' wide X 8' deep
Running (1) 1/4 hp pump and (2) 1/3 hp pumps. Ultra quiet and energy efficient W.Lim Dragon pumps.
3 bottom drains with air bubble diffusers
Giant 44" T5-HO 40W UV light
Wave 36 vortex settling tank
Sand filter converted to a bio-filter with media
Just waiting on the plaster now.
Part of a big back yard oasis build.