Ok I can obviously tell I am in way over my head...almost a month ago I decided I was going to set up a 75 gallon planted tank. I dove right in bought a tank and all the works. I have a few fish already living in it...they have been alive for a week now!:wink: No plants yet,but I have ordered a few mats of java fern and a few other plants. They havent arrived yet. Tonight I set up the C02 tank. Its one of those that has the ph monitor that turns it on. I ordered it from greenleafaquariums.com "the ultimate c02 system". Well I calibrated the ph meter, stuck the probe down in the tank. The ph was 6.8, I think thats where its suppose to be. I plugged the co2 regulator into the ph meter. I really wanted to see this thing bubble so I turned the ph dial down just a little. I bubbled for a few secounds then stopped. Will this be enough c02 when I get my plants? What should I set the ph at? Or do I just need to plug the regulator into the plug in the wall and just let it trickle out all the time?