koi5000The Kockney Koi KF5000 Vortex is a multi-chamber filter that is perfect for use in a Koi pond up to 5000 litres in size. However, used in lhtly stocked or fish-free ponds it can cope with a largerCustomers find the pond filter works well for 5000-gallon ponds, effectively clearing water in just 3 days. Moreover, the filter receives positive feedback for its quality, with one customer noting