Hi guys, new to the forum and need some advice. I've read my Mr. Beer book 3 times now, it doesn't say a whole lot about water. Can I use tap water? I've boiled three gallons of tap water and waiting for it to cool, this will be the first batch. The water here is OK at best, I know the first batch will not be the best, just want to make sure tap water is OK. If so can I pull it cold?