Aquablanc O2 Gentle is a fantastic new non-chlorine system for maintaining crystal clear & bacteria free swimming pool water. Supplied as a convenient twin sachet system, O2 Gentle provides water that is kinder to your skin, eyes & hair through oxygen based disinfection. O2 Gentle also contains clarifying properties & minimises scale formation making it the ideal product for maintaining optimum water quality. As a guide, Aquablanc O2 Gentle is applied to your pool once a week.