Hello, new to home brewing and this page. Had a question about fermentation temperatures. I live in NYC in an apartment without central air. Now that it's summer, my apartment easily gets up to 85-90 degrees in the middle of the day. I've got a batch that's three days into fermenting in a 2 gallon keg. I'm storing it in a styrofoam cooler with frozen water bottles so the temperature doesn't get too high. However, if it does, will this ruin my beer? Can anyone suggest some ways to maintain a steady healthy temperature while fermenting in the summer? Thanks