What kind of filter are you using? The simplest, most effective, and least
cluttered method I know is to inject it into your filter. This is
particularly effective with a canister filter because almost all the CO2 is
absorbed by the time it finds its way out through the output tube/spraybar.
Just lead an airtube to the intake tube of your filter - I drilled a hole
just above the strainer to fit the tube into.

kush

"You can't have everything - where would you put it?"

red406 wrote in message
...
hi all...
looking for methods of introducing co2 thru an externally mounted
reactor. appreciate pictures and examples...
would even appreciate DIY methods.
trying to minimise clutter and stuff inside the tank...thanks