I have been using Pureit compact since about 15 months. I replaced the Germkill kit after using it for 1 year. I have been cleaning the purifier every 3 months.
Green algae is developing every 3 weeks inspite of cleaning. I have replaced the Germkill kit in January 2011 and since March algae has started developing. If it cannot stop visible algae how do you claim to kill invisible virus!
I think their Rs 1 Cr safety challenge is baseless. If the challenge is indeed true, I should get the money.