This 15kw 600litre per minute German made pump is designed to pump sludge or effluent at high pressure (3-7 bar) The unique rubber lobes push the effluent where you need it to be. This unit is self priming and poised for action. Beats any open chamber impeller pump hands down. The unit is to be mounted on a concrete pad next to your pond or sump and is self priming. No pontoons or access issues.