Simple, efffective syphon requiring only a few sqeezes on the rubber ball to get started. It will then run continuously until all the water is drained from your bath/basin/etc. Can be used during a hosepipe ban. 'Grey 'water can be used on plants in the garden, to wash you car etc. even when there is hosepipe ban
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This was very unsatisfactory. There were no instructions. You have to have the bulb under water to make it work at all. The tubing is too soft, it closes up going over a windowsill, especially if the water is warm. I wish I had sent it back.
Two things you need to do is 1)start pumping the siphon submersed in the bath water , 2) make sure you connect your hose pipe to the end of the siphon and that the outlet is lower than you bath (Otherwise the siphon will never work!)Once syphonic action has fully started it will continue until bath is nearly drained. Should have instructions though.