BZ,GLAD YOUR FISH MADE IT. I JUST GOT BACK FROM WISC THIS PAST WEEKEND , OUR ICE WAS JUST STARTING TO THAW. I DIDN'T GET TO STAY LONG ENOUGH FOR THE ICE TO MELT. IT WAS ABOUT 1-2 FEET MELTED AROUND THE EDGES BUT I DIDN'T SEE ANY FLOATERS SO I AM KEEPING MY FINGERS CROSSED. I AIRATE AT ABOUT 3FEET IN THE WINTER AND THEN MOVE IT OUT TO ABOUT 6FT IN THE SUMMER.