Nope, no ice in northern Michigan (lower peninsula). the trout are jumping! Up to 20" after just one year- put in 10-11" last April.
Oh yeah- I've had the aerator on all winter? Actually, I love my set-up that I put together last summer. Aerator- with thermostat control. So, I set it to turn on when it dipped below 36 and off at 38- that kept the pond clear all winter. Now, I've reset the thermostat to turn on, when it is lower than 63 and off when it reaches 65.
I was surprised on 3/30, uniform pond temp was 51. With all the sub freezing weather we've had in MI and more SNOW in the past two weeks, I'll bet the pond is back down to 48 (temp of 30 gpm, artesian and well pump water) or lower.