Originally Posted by GASoline71
All I have ever used is just water (no star-san, no nothing) in the jug I use for my blowoff tube. I've brewed many a beer and never had a contamination issue.
I do use a little star-san in my 3-piece airlocks though. Since there is always a possibility of some of that dripping in to the beer.
I use star-san or perhaps a bit of One-Step (no foam) just in case. Recently with the cooler weather, I start the carboy in the garage. From pitching, it will drop another 8-14F which creates some suction and most recently moved it to where the hose came out of the liquid and there goes an ounce or so of solution up and into the carboy LOL oops! Had another brew that I put the 3-piece airlock and took me a second to figure out why the inside piece was sucked down on the hole. I just play it safe. Cheers!!