OASE Biopress 4000 pond filter

This is OASE economy range. The components are of good quality, but the pumps that come with these systems do not have a huge flow rate, so they are not suitable for ponds with large fish or ponds that require the filter system to be hooked up to a waterfall. 2 free spare 7-watt UV globes, on the house! Having said that, they are great for ponds with small to medium fish up to 1000 litres maximum (with small fish only). For ponds approaching 1000 litres, you should consider a Biopress 6000 or ideally a Filtoclear 3000.