Ice cracking when I resurface?!

[Reider]

Tonight I went out for my first real round of resurfacing. The trouble is the ice started to crack quite a bi. I've attached a pic of one of the areas where it cracked. I have the nice rink resurfacer and I'm running hot water to it. The tempurature outside is -25F with the windchill though there really wasn't much wind to speak of. Hoping you guys have some advice for me. Thanks.

[kevmac]

That will happen when it gets really cold like -25F. There's really nothing to do to avoid it since there's a good chance it's going to crack whether you are flooding or not. The great thing about that temperature is it takes about 5 seconds for your water to freeze. To patch the crack, just keep resurfacing and it will eventually fill up or you can pack it with snow and lightly soak it; it'll be ice before you know it.

I do prefer to resurface before it hits those temperatures but you can really add a "ton" of ice to your rink when it's that cold.