Ok Ive started a new thread

Leigh Stated earlier
"I am considering switching to some kind of reactor, or injecting directly
into the filter intake, in hopes of lowering the maintenance required. You
do have to rinse the Eheim diffusor's ceramic disk every week or two, to
keep the CO2 bubble size small."

Is the eheim made for this, or are you just putting the air tube into the
intake line in the tank?

I have an Eheim diffuser. It's actually not much work to clean the ceramic
disk. Takes only a minute. But I'm incredibly lazy. (My boss loves it. I'm
so lazy he can always count on me to come up with the most efficient way of
doing something. ;-)

I have a Magnum 350, would the gas just create a large air pocket in the
canister, or would it be disolved? Anyone tried this?

Yes, people have tried it. Many people find that injecting directly into the
filter intake is the most effective and lowest-maintenance way of dissolving
CO2 in the tank. The drawbacks are the noise each bubble makes when it hits
the impeller, and the possibility that gas pockets will form inside the filter.
How much of a problem this is probably depends on how much CO2 you are
injecting, and what kind of filter you have. I've heard Eheim filters are more
tolerant of CO2 injection than others, but I have no personal experience. I've
been reluctant to try it, just in case air pockets *are* a problem, and I end
up burning my motor out or something. Especially since I only clean my filter
once every six months...

Reactors are more efficient than diffusors, and silent. The drawback is they
tend to be big and ugly. But I've seen some that are meant to stay outside the
tank. I might try one of those.


Leigh

http://www.fortunecity.com/lavender/halloween/881/