Envii Septic Klear Tank Treatment Length_20m Not only does it protect Model:HydraShield Rainwater Tank Purifier 1L Not only does it protect the home by preventing gutters from blocking and flooding eaves The Philmac UTC® (Universal Transition Coupling) is a unique range of mechanical compression fittings that provide the ultimate in pipe connection flexibility The inclusion of nutrients within the septic tank treatment tablets promotes bacterial activity within septic tanks to get rid of any existing odours and prevent odours from occurring in the future making it the strongest septic tank treatment on the market and more than capable of dealing with any size septic tank