My DIPA has been fermenting for 8 days around 60F and it is down to 1.023 from 1.081 OG. I am wanting it to finish at 1.011-1.016 so I put it on top of the heating vent in the house to warm it up and I shook it around. It is ten gallons in a sanke keg fermenter. I am wondering if it is going to warm up too much. I put a small tasting glass of water on the same heater and it warmed up to 86.5F but that was only 3oz or water and the beer is ten gallons. Any opinions about whether this will have negative effects or will even help to get my gravity lower? The yeast is 3 packs of US-05.