How big is your pond (surface area and gallons)? How deep is the water?
Where do you live, i.e., do you have to deal with freezing water? What is
the temp of your water during the summer? How many fish do you have and how
big are they? What kind of fish, goldies or koi (the reason is in the growth
rate and eventual size)? It's not a simple answer, like "one 12" air
stone". But then again, ANY helps!

Lee

"FBCS" wrote in message
...
But you didn't answer the second part of my question. If airation w/
airstone is necessary what size and type do I look for. They do not hang
at
the top, but they are in full sun most of the day and in only 18" of depth
until I can finish digging. They is a slight waterfall they love to play
in
and swim against the flow.
"BenignVanilla" wrote in message
...
"Sam Hopkins" wrote in message
.. .
Unless your fish are hanging at the top of the water gasping you dont
need
an airstone.

"FBCS" wrote in message
...
I have read lots have natural ponds/VG filter no falls and they do
not
talk
of the need for an air pump/stone. How necessary is a air pump/air
stone
to
the health of the pond? Do you calculate size by gal with this type
of
pump
also. If not what would be a typical size for a pond, better yet,
what
do
you use? Joann

Sam, I think scientifically this is probably true, but if someone is
strangling you, would you like them to stop now, or wait until you turn
blue? Either way you will probably live, but which is really better?
It's
cheap and easy to aerate.

BV.