Typically when I get ice in my buckets I just throw it out and am thankful that that's some water I don't have to waste firewood on. But with the surprise run of sap I got on Tuesday (full buckets and I didn't even notice) and then the next two days of 16º I had HUGE blocks of ice in each bucket, such that there was only about a pint of sap (at 6% sugar!) in each bucket. Question is this...........that seems like an awful LOT of frozen water/sap to not try and thaw and use. Is that block of ice really just all water? If not, how much sap is trapped in there still. Each block of ice is about 1-2 1/2 gallons of ice. It's a wonder that it didn't split all my buckets. Thank you.