Does BBA go away if you keep co2 at 30ppm? If so how long does it take for it to go away. I've been plague with bba for years now and I'm totally fed up with it. I have tried h202 treatment, kept my tank absolutely clean with trice weekly water changes using turkey baster to dislodge detritus. The plants are very healthy but the older growths have small bits of bba on them. Since I've read that bba is attributed to co2, I've cranked up co2 just enough that fish aren't gasping for air. I'm guessing its at 30ppm or higher cause I can't imagine it being lower since the livestock is about to gasp if I add anymore co2. About 4-5 bubbles per second using a neo large diffuser for my standard 10 gallon tank.