Yes.
I checked the temperature after 60 minutes and it was 149F. Is it normal to loose that much heat in a Rubbermaid cooler over an hour mash? Will this effect my final gravity? I don't want it to be too dry. I'm making a red ale that I want to finish around 1.010 or a little higher.
My guess is that the original mash was not as hot as you thought it was. It is very common for the mash not to be mixed or stirred thoroughly enough. From 152 to 149F is not going to drastically dry the beer. RDWAHAHB
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