I just picked up some new 5000 ML Flasks at my Local HBS. Very excited as I have now eliminated a transfer of Wort from the Pot, into my 1 gallon Plastic Jug. I can now do everything in one vessel. HORRAY!!! Bad newas. I bought a bunch of other stuff, and in the haste, my stoppers that held the air locks wound up not being put into the box. I though I saw something here once about possibly using tin foil on a starter. If so, how would I go about that as I have no other oprtion right now except halt everything and push off the Brew Session until next weekend.