I know that people have tried that ... give it a shot!

Personally I wouldn't want to do it because I just don't like connecting my
CO2 line to my filter ... it's a hassle if I want to clean the intake tube
etc. (not that that happens often). Personally I think a small diffuser
like the Hagen one I mentioned is the way to go, if it supplies enough CO2
to the tank. Easy to set up, easy to remove, easy to clean.

"Dave M. Picklyk" empowered us with this mighty blow
against the Patriarchy:

Just got an idea Dave. What about putting tube in the intake like I
did, but fitting an airstone on the end of it. This would make much
smaller bubbles and possibly ensure more of an even flow. What do you
think?

"Dave M. Picklyk" wrote in message
a...
I'm getting about 26ppm (if I read my pH right at 7.1, otherwise it
might
be
7.0 and then 33ppm) now. Last night I was getting even bubbles coming
out
at
about 38 bubbles per minute. Now I get a big burst of bubbles and
about 3 inches of water siphones down, then it builds up again in
about 10-15 seconds and gives another burst. Why would this change
overnight? I don't have the end of my tubing cut at a 60 degree
angle, should I? What difference would it make? Excuse my stupidness
in this matter

Thanx!
Dave.

"Dave" wrote in message
...
"Dave M. Picklyk" empowered us with this mighty
blow against the Patriarchy:

The problem is that when I turn my aquaclear filter down in
the morning when I feed, it stops bubbling and water siphons
back into the hose a few inches, then it has to clear it out
again.

Err, that ain't good. It sounds like your Aquaclear is somehow
actually drawing CO2 through the line hose it's on ... if so,
your CO2 mix bottle might collapse. The CO2 should be coming
from the hose on its own (positive pressure).
I posted a message up here asking if putting the hose into the
end of the intake tube of the AquaClear was ok...thinking that
the bubbles will be sucked in and churned by the impeller,
breaking them up and storing them there for a while to absorb
more C02 into the water instead of it escaping...everyone thought
it was a good idea and I saw other ppl doing it too. How would
you do it?

Well, I have injected CO2 directly into filter intakes before. For
a
while
I was injecting into an Eheim canister filter; I had the tubing cut
at
an
angle and loosely strapped to the outside of the intake strainer.
I was also injecting into a Fluval canister filter, for a while
with the same method, and for a while I had the tubing actually
inserted into a hole
in
the intake strainer.

I'm not really familiar with the design of the AquaClear intake; it
would
seem to me that you'd need to restrict the flow of water through
the strainer in order to cause enough suction to actually pull CO2
through
the
tubing. Or maybe it's due to the high flowrate of the filter? I
don't know.

Right now I'm running my CO2 into a Hagen Natural CO2 system
diffuser,
and
I'm happy with it. I'm getting good levels of CO2, the diffuser is
easy
to
hide behind some plants, and I don't need to worry about locking up
the impeller of my canister filter.