Hello every one I am looking to what simple options there are for an inline water filter to put in between you cold water line, and your faucet for better water quality for water changes not a R.O system. I am not sure of what you would use, what you are looking to take out, and what you want to leave in. I know your are a lot of different simply options to make crap water drinkable out of the tap and looking for suggestion on what you can run inline to improve water quality with out removing trace elements that are desired. Thanks for your time. Im sure this has been covered a million times I can not find the threads thow,