[Avi]

By the way....what is the pH of the water that you use for your water changes? That may have some relevance here.

The wind isn't what would address a CO2 problem, which would be caused by something in the tank that's contributing to the low pH like your water change water-source...or...something that's generating CO2 like decaying matter or a dead spot in your substrate. In order for you to address such a problem...which you should test for as kipher suggests so you know what's what...you'd need to do certain things inside the tank like increase the water flow and make sure your water's surface is being agitated so CO2 would escape at a faster rate than it might be now...again, that's all assuming for the moment that CO2's the problem.

The first thing you need to do is attempt to isolate the cause of the low pH...then once you do, there'll be answers here as to how to address the issue.