Temperature variation for lagering?

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neuron555

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The answer to this is probably somewhere here, but I couldn't find the exact information. I am making a schwarzbier (Jamil's recipe), using WLP830, German lager yeast. The optimum temperature according to White Labs is 50-55 degrees. This time of year, my garage runs between 43-55 over the 24 hours. Does some variation hurt the fermentation, or is it OK to fluctuate as long as the range is good?
 
Try to keep it steady. If you can, just put the fermenter in a tub of water to even out the temp flux.
 
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