After extensive research from the web I decided on the Bionizer system for sanitising our new pool that I installed 2 years ago now , as a plumber the Bionizer , associated PH Boss & Oxidiser was a treat to install , as a complete novice with all things pool related , the instruction manual & instant phone assistance I was given by the technical staff when required was first class . As mentioned , after 2 years with the Bionizer I have to ask the question , why would you have anything else ???? The kids love it , friends with a daughter that's infected with psoriasis love it due to the remedial /stabilising effect of the water, my wife & I love the fresh /spring water feel , add the minimal service requirements , even during the lousy Melbourne winter periods , ongoing contact with Bionizer via Emails make this system first class in my book , & no ! I don't work for the company .