Heave near center of rink

[TNT-Ice]

After a week+ of warm temps we finally have some <32 temps. We did not lose the ice sheet during the warm up. Last night was the first scheduled <32 night in over a week. My boys and I did a hot water resurface with our homeboni last night.

We just went out for another resurface and I noticed a good size heave near the center of the rink. The heave is gradual and 1-2 inches higher at the peak.

I suspect the best approach is to continue to resurface.... We plan to skate starting on Thursday and have a family event on Sunday.

Any advice?

[TNT-Ice]

Looks like we need to resurface many times to add about 2" of ice surface.....

I've read elsewhere that cold water is better than hot water for building ice depths. Is there any truth to that?

[TNT-Ice]

Several resurfaces yesterday / last night and we added an inch of ice. I just finished the 2nd resurface so far today. We're slowly getting back to flat as we fill the spaces between the bumps and humps.

We should be in good shape for the family visit on Sunday.