CO2 huh? I do believe I might need to cut a few good things out the way of my flow, you are probably right. But I will tell ya, my CO2 is at the limit, anymore and my fish are gasping. Great idea on the second one, I did add one stem of the H. Lancea to my corner on the left that gets good flow, so we will see. I appreciate the advice N00dl3.
I think your co2 level is fine. It is the co2 and nutrients distribution/flow that you're having problem with. The best way around that is move your power head around to ensure you're maximizing the distribution of co2 and nutrients to all your plants.