I am using Aquaguard I Nova since 2008. I get the candles changed every year.However, the filter is not effective in removing bacteria after few months. In Nov.2011, I got both the candles repalced by local dealer who supplied the equipment. On 28.6.2011, I get the filtered water checked in my laboratory for bacterial counts by standard procedure of MPN. To my surprise, the coliform counts was much much higher than the permissible limits. Then what is the use of filteration.Please suggest the remedy.
Dr. Ashwani Kumar
126, Professor Colony
Balsamand Road, Hisar