Hi
I put in a new 900 gal. pond last fall with a Biofalls filter/waterfall.
We shut it down for the winter and used a Thermopond de-icer, which worked
great! I have Shubunkins/snails/frogs.

Should I start up my biofalls now? The pond is ice free, but still cold up
here in SW Ontario Canada (35-40F deg. days).
(We have seen light snow in April before.)
Thanks in advance.