having problems with gas in my cold water i came up with a pre filter to help break down the chlorine ,choramine,toxic metals and gas i took a flow thru filter used the carbon insert and have another micro flilter wich i'm adding for my next fill it worked great i have no gas bubbles in my tank at all and the fill time was only a fraction slower it connects to a python the parts are available at the lfs i also hope less declorinater will be needed i have yet to test the water any ways i hope this is of some use to you guys in the city or well water users to preclean your water

