Hi all, A few weeks ago I decided that the bubble ladder I had in place for my DIY Co2 wasn't making good enough use of my Co2. After searching around online for other Co2 reactors, I came across this article. In a nutshell, it provides instructions on how to take a very small underwater filter, and modify it so that you can connect your Co2 tubing to it, and then use the filter to break the big Co2 bubbles into a fine spray of small bubbles. I just completed the project myself and posted a video of the process. Check it out and let me know what you think! [ame=http://www.youtube.com/watch?v=liuXWQcJCcU]YouTube - DIY Cheap Co2 Reactor / Diffuser for Planted Aquarium[/ame] While I was shooting the video I also took a closeup of my albino bristlenose pleco.