is this normal?
- Thread starter micaaronfl76
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sissy
sissy
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It is just the change in temps and you can control it by removal and spraying the area with peroxide .
any harm to just letting it go and freeze set in?
sissy
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If you leave it running and it builds up to thick it could over flow and also use up a lot of oxygen .
Being in the Philly area, as I am, the picture you posted shows a fairly shallow stream. Depending on our weather, there is a good chance it will freeze or be very close to freezing. In which case moat of that algae will die off. Not a problem if your pond is relatively clean. You don't want a lot of organic matter in the pond in the winter. I would not recommend you leave the filter and stream running unless you are sure it won't overflow as ice builds up, and two, your fish have a deep section of pond where water is not being pulled from or disturbed.
Craig
Craig