BoyPete wrote:
Is there an easy test for oxygen content in pond water?
I have an air pump with twin outlets combined into one, feeding an
airstone in the pond. Is there any advantage in putting a stone in my
box filter?

Supplemental question........... any reccomendations for airstones (in UK)
please. I live in a hard water area, and they clog in a few weeks.
--
ßôyþëtë
London, UK

either sintered glass (and use muriatic acid to clean them frequently) or
how about soaker hose? Ingrid


"BoyPete" wrote in message
...
Supplemental question........... any reccomendations for airstones (in UK)
please. I live in a hard water area, and they clog in a few weeks.

On Tue, 17 Apr 2007 07:04:51 CST, Phyllis and Jim
wrote:

How does a waterfall or a stream compare to a bubbler? Do they have
stats for that? They make for a lot of surface exposure. Jim set up
our berm to have the water go over four falls before running down an 8
foot stream into the pond. He saw that as getting pretty near full
oxygenation. Phyllis

Hiya Phyllis, There was an article, but now I can't remember whether it was
in a magazine or on the web regarding this, with stats. What I remember
from it was that water falling on rocks got the highest score, then
fountains, then airstones... I believe. I'm only positive about the water
falling on rocks. ~ jan
------------
Zone 7a, SE Washington State
Ponds: www.jjspond.us

Here's the solution I use for putting oxygen in my pond.
The venturi makes very fine bubbles. No airstone or second pump needed.

http://i83.photobucket.com/albums/j2...ak/triffet.jpg

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