I think you can use what I've heard of as a *bell* or something like that. An overturned container, where the co2 bubbles into and dissipates slowly into the water. I don't think a power filter is any more disruptive than a sponge filters would be, and it's much quieter, works great for pumping in co2. Sylvia > The tank they were in is a pretty hevily planted tank, and I am > injecting CO2. Is there an effiecient way to add CO2 to the tank > without any power source to break up the bubbles. I should probably > post this question on the APD. > > Thanks > > ===== > J. Miller > Edmonton, AB, Can. > > __________________________________________________ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ > > > ------------------------------------------------------------------------- > This is the apistogramma mailing list, apisto@listbox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@listbox.com. > Search http://altavista.digital.com for "Apistogramma Mailing List Archives"! > ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!