I would say that where you have it currently is the best place. The bubbles
should get smashed pretty well in your pump and then disolved - hopefully
fully before they reach the surface of your tank. Did you notice a drop in
PH?
The only better place would be in a reactor inside the aquarium. You'd have
to feed the output of your sump pump into some type of CO2 reactor and
bubble the CO2 into the bottom of of the reactor. Lots of sites showing DIY
reactors and their setup.

HTH,

DJay


"Evergreen" no wrote in message
...
I am currently setting up a DIY CO2 system on my 46g tank. (and BTW, the
posts in this group regarding this have been very helpful!) I have set up
a
single juice container for now. My tank is using a wet/dry filtration.
Where do I put the output of the CO2 container? Right now I have the
juice
container sitting on top of the filter on the sump box and the output is
going right down into the sump box next to the pump. My thinking is that
since the CO2 is coming out right by the pump, it will get pumped right
into
the tank. I didn't want to put the output at the intake in the tank
because
I figured the CO2 would be released from the water as it trickles through
the filter.

Is my thinking correct on this? I set up the CO2 tank in accordance with
the article he


http://www.aquariumfish.com/aquarium...cid=58&search=

There was no mention made in the article of where to put the output on a
wet/dry filtration system. Thanks in advance for any help!