A few yrs back, I used a 1500 watt heater before I went the airstone route
(as I liked the idea of putting O2 into the pond)- I had mine on a timer for
2 hrs a day on the coldest days (0 to 15 F) and my fish would also hang out
just below the heater when it was on
Gale :~)
" They weren't gasping in any way, they weren't sticking their heads out of
the water, they seemed to like to come up and float just below the bottom
of
the de-icer, like they wanted the warmth of the surrounding water, or
access
to the sun.


wrote:
"Iguana" wrote:
this is a symptom of oxygen deficiency, not getting warm. Ingrid

Found my fish like to come up and hang around the 1250 watter,
so seems to be an added bonus.




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