Koi pond 100,00 litres with Oase Proficlear Premium XL Drum Filter - building a rill with sleepers

Koi pond Oase drum filter installation for 100,000 litre pond Oase Proficlear Premium XL Drum Filter system installation How to install Oase Proficlear Premium XL Drum Filter system with 2 moving bed modules and discharge module How to make a base for the filter system Setting out the return pipework for water return to the pond Building a rill with sleepers to return the water back to the pond How to build a rill with sleepers Rill with sleepers How to build a waterfall Waterfall build