What type and how much filtration does a koi pond need?
Koi will eat a lot; this is especially true in warm weather.This implies a great deal of wastes that must be filtered from the pond.Biological wastes come in many forms and require different approaches tofiltration in the same system (pond). We recommend that koi ponds be plumbed insuch a way as to remove water from the bottom, mid-level, and the surface forfiltration. We also recommend at least two separate filtration systemsincluding two pumps. Usually this consists of one system for bottom waterfiltration and another system for surface (skimmer) and/or mid-level waterfiltration. We do not recommend circulating any water that is not filtered. Thecombined filtration system should filter and return at least one pond volumeper hour on small ponds (under 5000 gallons) and one volume per hour and a halfon larger ponds (over 5000 gallons). A combination of mechanical (solidsremoval) and biological (ammonia conversion to nitrate) filtration is requiredto properly filter a koi pond.
