Iowa is up to 16 points and on a season-best five-game point streak.
Brett Budgell scored twice for Bloomington in the second period.
Sop is up to 19 points, second in the ECHL in points.
On Iowa’s tying goal, Miotto drove to the left post and TJ Walsh fed it off his stick and in, Miotto’s fourth of the season. The Heartlanders play Bloomington five more times between now and Dec. 1.
Samuel Hlavaj made 24 saves in defeat. Mark Sinclair allowed two goals on 18 shots.