Two main issues with this product, 1) the tube had multiple kinks in it due to how it was packed by the manufacturer - I tried to get them out with hot water, but they keep coming back severely restricting flow, 2) the pipe is fractionally too large for both the syphon tube and the tap and doesn't seal. Consequently, once you have started the syphon and close the tap to halt the flow, air is able to get back into the tube at the tap and the fluid falls back to the upper vessel.