still not ready here

[maple flats]

After making some improvements and tightening a little more, I turned on my vacuum today. The overnight low was 33 and it was up to 36 at the time. I let it run for over an hour. I was getting 25" of vacuum at the releaser and 23" at the far end of the main. In that hour the releaser only dumped once and it only dumps 3 gal batches. The second batch had only added about 1 qt in the releaser tank. Vacuum still at 25". I then shut it off, must not be ready yet. I think the ground here is still frozen too deep. We had some hard freezes before any snow , it is now gone, but I only have mud about 1/4" deep, the rest is still hard. In the woods in areas where I still have some snow cover, there are no rings melted around the trees. I've heard you won't get much sap until the trees have a ring melted around them.

[Wanabe1972]

I had the same thing here it was 35 this morning and I fired up the vacuum went home a slept for 5 hours and didn't get a single dump. When I shut it down at 2 it still had no vacuum at my second ladder. I could hear ice in the line moving around but the rain was still freezing on the outside of the lines. Maybe tomorrow it will be better it just wanted to clear the lines and dump tube SAP anyway.