Do I dare ask a simple question, I ask myself rather sheepishly? I'm a virgin aquatic gardener, and I've been reading everybodies references to CO2 addition to the water to improve plant growth. Is anyone willing to tell me how to do it? What does it do to your fish? The plant thing is actually an afterthought, but I'm thinking about starting up a second tank with the sole purpose of growing aquatic plant's. Thank's Blair binnnes at wpog_childhosp.bc.ca