I have never been an airstone person (the little bubbles spray water onto lamps, ect).Do you think that an airstone on a timer would also accomplish this? I also have some of this film, but am not too annoyed with it. I'm also concerned with the off-gassing of the co2, although i'm using DIY and not pressurized.
If there is enough air coming out to "churn" the water surface==yes.