Learn the ins and outs of recycling water in the most practical way with the h2o pump kit this fantastic kit is the perfect way to get to grips with basic water flow and understand how such an important part of our daily lives can be recycled you can enjoy the challenge of building your very own water pump and then enjoy the satisfaction of watching it in action you have almost everything you need just add two aa batteries to get your pump in motion this is great fun and suitable for kids w