Hey folks, Finally getting ready to add some co2 to a recently set-up tank (29g). Just planning to use the red sea turbo co2 for now, which I understand will generate a fairly low co2 level. Question is: do I have to worry about my fish when I start up the co2? Is there a risk of (a) too much co2, or (b) big pH drop, either one of these being harmful? Thanks!