900 gallon is pretty small. I would run the pump but not over the water falls until
the water temp was going to stay above 55oF. the reason is fish immune system shuts
down below 50-55 and sudden drops in temp can stress fish, brink out ich.
if you have a flow adjuster on the pump you could cut it back so it wouldnt put a big
flow over the waterfall ... keep an eye on water temp. Ingrid

"AngieNews2" wrote:

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.




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