Don't know what you're using for a grain bag, but 5 gallon paint strainer bags from Home Depot, etc. work great. They're ridiculously cheap, something like a three-pack for a few bucks. Search no-chill brewing on here. It's originally from Australia where they have water shortages in the outback, but need their beer! You transfer your hot wort into a food grade container, cap it, and pitch you r yeast the next day after it cools down. No need for a wort chiller, no filling the sink with cold water and ice, etc. If you make yeast starters, also look up natural wort starter. It's just saving a little of your wort from brew day to pitch your yeast into, rather than buying/using dry malt extract. I tap off enough for a starter, and add my yeast (after cooling it down enough). hen I do my no-chill overnight, and by the next day (maybe two) my yeast starter is ready to pitch. Okay, lots of new stuff there. Sorry about that. I still get excited about sharing info with other brewers.