The Hozelock Titan
The Hozelock Titan is an excellent pump, ideal for waterfalls and filtration. The Hozelock Titan will pump high volumes of water in continuous use without clogging.
The Titan range will run continuously without clogging and handle solids up 8mm (8mm with the 5500 and 8000 and 4mm with the 2000 and 3000).
The Titan range have large intake slots in the base of the pump which encourage the pump to collect solids from the floor of the pond. All Titans have unidirectional rotation to maximise pumping efficiency, with open impellors to provide the solids handling capability. The Titan 2000 and 3000 use the same motors as the mid range Cascades providing unparalleled performance with low running costs. The larger Titans use heavy asynchronous motors, these use stainless steel rotor sleeving to increases magnetic coupling for maximum performance.
Titans also feature a Wildlife Protection System WPS, there is a lever on the side of the pump which can be used to adjust the size of the intake slots, these can be adjusted down to 2mm, to prevent young fish or wildlife getting sucked into the impellor.
The outlet (20-40mm) of all Titans feature a ball joint which allows the hose to be positioned more freely, other features include tool free access, and extra secure locking catches to keep the cage held firmly together. All Hozelock Titan pumps are guaranteed for 3 years.
http://www.valueaquatics.co.uk/pond-pumps-hozelock-c-22_36.html