Hi Guys. I just wnated to ask a few questions about equipment and sanitization after I notice 2 of my brews had a very slight off tast. I have not replaced any of my houses or syphoning tubes sicne I started brewing 8 months ago. I am very good about making sure everything I use is clean and santized before it comes into contact with my wort. Never the less the hoses I am using are starting to get stains. I sanatize them before and after use and I even stick them into boiling water for good mesure. Can bacteria even servive boiling water? DO I need to replace my hoses and auto syphon? Also on another note I accidently scratached the inside of one of my glass fermenters, should I throw it out too? Well thanks guys.