Very noisy I had the largest external pump so so noisy can't think quite it down very very bad can't wait to you by mine or further some compete these parts are cheap and nasty an hour so noisy and they can't keep the water clear I can't wait to get rid of these tea canister pumps and replace it with a german manufacturer Lisa Chinese rubbish set after services rubbish bourbon solution pump fit the system is rubbish can't compete Very cheap very nasty not impressed gay what you pay for what you get best buy dearer canister pump Mr pi idea of pump I will not be buying an all pond solution pump again or car our pond pump change it to that nosey change it to dearer pump because it doesn't work or doesn't fake