| hehe...wrong forum, you want the pond and aquatic plant forum but anyways, everyone worries about the gas build up when your pond freezes over, but since its new, you have a lot less debris in the bottom breaking down to those noxious gases. i wouldn't worry about it this year, especially if you just have frogs and..if you seen numerous frogs from just making creating a pond, sounds like your surrounding ecosystem can replace them my pond was completely frozen over last year and had tons of muck in it, all my fish(19) and one frog survived. but this year its cleaner and I have the water pump outflow facing upward...huge hole in the ice so just plan ahead for next year | 
