I am down South, but my winemaking area (basement) is real cool (58-60 degrees). I kept primary fermenting pail under a couple of lamps for additional heat (up to 65 degrees). But now I am in secondary fermentation and am using a glass carboy. I would like to keep using the good ole incadescent light bulbs to provide the slight increase in temp that I need - but do notknow the effects of light on the fermenting must! Should I wrap the carboy in a blanket for warmth and light blocking??