This is far from the truth.
Unfortunately most pool shops rely on the continuous sale of chemicals and with the Naked System reducing chemicals in the pool by up to 70%, I think you can see why we hear this too often.
The Naked System utilises both Ionisation (Copper & Silver) and Oxidization making it IDEAL for hot weather as the Ionisation is not effected by heat or the sun like chlorine.
See our product reviews HERE.