"Derek Broughton" wrote in message
...
Gareee© wrote:

"Derek Broughton" wrote in message
...
MC wrote:

2) I've read bio filters are useless below 50 degree. So I won't run
it. Is it better to remove it from the pond, or just leave it? I
anticipate the heater will keep my pond around 40. I don't intend on
"heating" it, just keeping it from freezing solid.

40? _That_ is some amount of heat. If an aquarium heater works at all,
your surface temperature is going to be within a degree or two of the
freezing point. Forget the heater, use a bubbler.


How big a bubbler should we get for a 12x12 pond, 2-3 foot deep. We have
a
number of small goldfish, but nothing bigger then 5 inches.

In S. Ontario, with temperatures down to -25C, I could keep a hole open
with
a 15W aquarium air pump and one of the long (6") air stones, suspended
6-12" below the waterline.

Thanks, Derek. I'll save this, and try that this year. We didn' get near as
much snow as I thought we would last year, but we've had a ton of rain this
year, so we might get more cold, and more snow as well.

--
Gareee© (Gareee "at" Charter "dot" net)
Homepage:
http://www.fortunecity.com/tattooine.../mainframe.htm
Custom Figures, Wallpapers and more!

"Derek Broughton" wrote in message
...

In S. Ontario, with temperatures down to -25C, I could keep a hole open
with
a 15W aquarium air pump and one of the long (6") air stones, suspended
6-12" below the waterline.

Will a fountain run winter long, and also help add oxygen as well?

We have a 2 ft tall gargoyle fountain that might help prevent ice formation,
and increase oxy flow...


--
Gareee© (Gareee "at" Charter "dot" net)
Homepage:
http://www.fortunecity.com/tattooine.../mainframe.htm
Custom Figures, Wallpapers and more!

Gareee© wrote:

"Derek Broughton" wrote in message
...

In S. Ontario, with temperatures down to -25C, I could keep a hole open
with
a 15W aquarium air pump and one of the long (6") air stones, suspended
6-12" below the waterline.

Will a fountain run winter long, and also help add oxygen as well?

We have a 2 ft tall gargoyle fountain that might help prevent ice
formation, and increase oxy flow...

I shouldn't think so. A fountain just provides a bigger air-contact
surface, and encourages quicker freezing. A bubbler will create a very
small hole - mine was always in the 2-6" range.
--
derek