co2 bubble question?


Guru Class Expert
Jan 22, 2008
Vista, Ca
Just wanted to confirm something, when using a venturi reactor does it matter if tiny mists of bubbles are flooding into the tank or if i can dissolve them enough to where there is no mist is that just as good if not better for the plants?



Lifetime Charter Member
Lifetime Member
Nov 21, 2007
Los Angeles, CA
Mists of bubbles are OK, as long as you do not mind them. Something like the DIY External reactor (in the Articles forum) dissolves almost all of the bubbles (mine usually gave off mists of bubbles in the afternoon, however), and putting CO2 thru a needle wheel powerhead does mostly bubbles. The bubbles aren't so much the issue. The issue is: Is the CO2 getting to 30ppm or whatever ppm your goal is? Hopefully, you have a drop checker, that's the best way for you to know whether your CO2 reactor technique is working.

Here's a very good post on drop checkers and their use: