The Hozelock Easyclear
The Hozelock Easyclear is an excellent pond filter and is suited to small ornamental ponds no larger than 4000 litres, there are two versions the Easyclear 6000, 4 in 1 (for ponds up to 4000 litres) and the Easyclear 3000, 3 in 1 (for ponds up to 2000 litres), these were formally called the Easyclear 4000 and Easyclear 2000, but where re-branded 6000 and 3000 in January 2007.
The beauty of these products is that they offer an all in one in pond solution, all you need is get the unit drop it into your pond and switch it on. Aesthetically the unit looks good because it sits in your pond you have no filter boxes and pipe-work to conceal and hide!What does the 3 in 1 and 4 in 1 bit mean?
Well the 3 in 1 is a UVC (5 Watt PLS bulb), a Filter (Sponge) and a Fountain in 1 unit, the 4 in 1 is a UVC (9W PLS bulb), a Filter (Sponge), a fountain, and has an outlet to provide a small Waterfall.
Both units have useful features such as a ball joint for easy levelling of the fountain head, feet for stability, fountain stem extension pieces for varying pond depths, 3 fountain heads (2 Tier, 3 Tier and Bell), Flow control to adjust the size of the fountain, and a flow control to adjust the waterfall (4 in1 only, outlet size 25mm).
Maintenance is simple by pressing the 2 grey buttons on the front of the unit the lid lifts up allowing removal of the sponge for easy cleaning, annually the UV bulb, quartz sleeve and sponge should be replaced with new units, this will ensure the unit operates and runs smoothly for many years. It is worthwhile removing the impellor and cleaning any debris from inside its housing periodically too.
http://www.valueaquatics.co.uk/pond-filters-hozelock-c-27_48.html