Hi Tonyg. as far as i know atm in nsw you can use an electric water pump for a highbanker, which i think is the go as u can run material without creating significant turbidity 8) Get in contact with Robert Crampton (Crampo's Prospecting Supplies), Hes at Glenreagh. Great guy, met him at the lismore gem fest and bought a couple of Garrett super sluice pans from him, he will get u on the right track.