Well you can try putting the Kamoer on the input side of the reactor. Have it pull water from the tank and push into the reactor. If there is any connections that are not air tight, you will get water leaking out.
CO2/air bubbles building up at the bottom under the media? I have never heard of anything like that.
CO2/air bubbles building up at the bottom under the media? I have never heard of anything like that.