I've been having banana flavor problems, and originally thought it was my water, but after ruling that out, all I'm left with right now is temperature.
I've thought about buying a fridge/freezer big enough to stick a fermenter in, but that seems like overkill just for lowering fermentation temps for ales, and space is limited in my apartment. Wet towel+fan didn't help.
I was wondering, has anyone seen a cooler (igloo/rubbermaid sort) that is large enough (and vertical enough) to fit an entire fermenter inside (preferrably a glass carboy)? I figure if I fill one with water and ice several times a day, around the carboy, and seal the cooler, that would help get temps down...
So far they have been around 72 on the outside, but apparently a good bit higher on the inside. Not a right tasting beer, yet.