The Swimfresh Chemical Starter kit is ideal for small pools. It contains 500g chlorine granules; 500g pH increaser, 500g pH reducer, 500ml algicide and a pack of 25 3-way test strips. Also included in the box is comprehensive Above Ground Pool Guide that includes lots of information on how to look after an above ground pool, how to treat the water to ensure that it is safe to swim in - as well as a handy problem solving chart.