Do I Need to run the pump 24/7?

I wouldn't turn it off overnight. Mine is on a timer, on for about three
fourths of the time; 45 or 60 mins out of most hours during the day and 15
or 30 mins each hour overnight. I did it originally to disrupt any permanent
current that might be set up. I read somewhere that the bacteria in the
filter start dying if the flow is off for more than an hour.

jon


"Otto Pylot" wrote in message
...
This is a new pond. About 4 feet tall with a 6 foot meandering
waterfall that dumps into a 10'x10' pond that is about 4 feet deep.
Lots of plants, crystal clear water, and 4 Shibunkin gold fish. We plan
on adding some koi next year. Our electricity bill has increased more
than we had expected, hence the question. Would putting the pump
(skimmer) on a timer so that it was turned off at night, from 10pm to 5
or 6am hurt the ecosystem? This would probably just be for the winter
months (in California).

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