Yes there is pressure, but it's pressure against the top of the container, not co2 vs water. Bubble housing diffusers are some of the worst on the market. Test the PH before and after, or get a drop checker, and I believe you will find this particular way is not very efficient. Kudos for trying something different though, and for sharing.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Last edited by burr740; 12-14-2014 at 03:36 PM.