WaterLoo is a patented, easy-to-install and easy-to-use, lightweight and functional smart grey flush product that increases your toilet’s capacity for grey water use. It is a non-permanent installation that blends seamlessly with the toilet’s design, while integrating with the flushing system. Aesthetically pleasing, WaterLoo makes it easy to pour and re-use salvaged household grey water, thus saving precious drinking water. At the same time it gives you more space to store grey water for flushing. This means more flushes before having to fill up again and storing the buckets used for grey water pouring out of sight for longer. Prevents grey water sludge from clogging the cistern mechanisms. Less Filling ~ More Grey Flushing!