We had a pool installed 18 months ago and the guy who looks after our place told us to use Bromme (will have a look at the tub later and see if it says anything in English - doubt it). He reckons it is better than Chlorine for the skin etc. Quite expensive though but in saying that, I never had the opportunity to have an outdoor pool in Glasgow!!!!!!!!!!!!!!! (apart from the endless puddles). I must admit that with the Bromme you don't smell all strange like coming out of the swimming baths at home with the Chlorine!! Good Luck and Enjoy your Pool Fiona