The new hozelock bioforce 4500 filtration system is a combined package including the new aquaforce 4000 pump and a bioforce 4500 uvc filterr it replaces the old ecoclear 8000 setsr informationr the new bioforce is pre assembled for easy installation with a new pond or an existing filtration system the unit can be hidden at the side of a pond or buried in the ground up to the level of hose inlets the pressurised filter allows the water to be pumped to a higher exit point to create relaxing w