Earn 309 loyalty points with this purchase (2000 points are worth an £11.00 off voucher) More than just an Algicide! Convenient Easy Squeeze to Measure Bottle - No Mess! Tough on algae! Flocculant effect aids filtration and improves water clarity. Compatible with all types of filters. Enhances the efficacy of active oxygen and chlorine disinfectants. For best results, use with PoolSan Regenerator and have complete chlorine free protection. If used with chlorine - Reduce your free chlorine content by up to 75% and still have complete protection. Is very stable in the water, requiring only very small top up doses, even in conditions where the suns UV rays cause active oxygen and/or chlorine to "evaporate out of the water very quickly. Pool water that's kind to skin & eyes. For soft, clean, sparkling water that's odour free. Hypo-allergenic pool treatment, ideal for kids and people with asthma or allergies. Please message us in the chat window below if you have any questions or need any advice using our products. This product is fully compliant with UK & EU biocidal products regulations. UK HSE Biocidal products Regulations (BPR) authorisation number for PoolSan CS is: UK-2019-1177 Biocidal products must be handled with care. Always read the label.