So i use the BRS Co2 scrubber and media, and everything works well the way i have it hooked up. The media lasts an average of 2 months, regular ph readings of 8.2-8.5. Even gets up to 8.6 every once in a while.... my question is, are there any tips or tricks to get the Co2 media to "scrub" at a more even rate? Every time it seem like one side of the cartridge gets more air flow than the other