Hi, I made my first liquid yeast starter at the weekend and pitched it into my Yorkshire Bitter I made on sunday. I used one litre of tap water in my flask. Added 200g of dme, heated to boil while stirring, then topped up with one litre of boiled water. I then boiled it all for 15 mins and then cooled in ice water. I pitched the yeast and placed it on my stir plate. It all took off well and made a right mess foaming out the top by the following day. One thing that is troubling me is I did not treat my tap water as I was worried that Camden would kill off the yeast. The bottled water I had was Ashbeck which is very low in calcium. In future I will use a different t bottled water with more minerals but for now do you think that there will be any negative effects with my beer?