Floatron‘s seem to be a well hidden secret in Australia. It’s a floating device that purifies the water through a process of ionisation.

• It runs on solar power
• It floats in your pool and so requires no installation work
• Requires that your pool receives a reasonable amount of direct sunlight each day
• Reduces the amount of Chlorine in your pool hence reducing the number of hours each day your pool pump needs to run for
• Works with or without a pool cover

For detailed user reviews see:

• David Rowe’s blog
• ATA Magazine issue No. 110 (paid download or subscription required)

The Floatron can be purchased online from Smarthome and shipped to Australia for approximately $350 (subject to exchange rate and shipping charges).