thanks guys, I am running about eighty with the lighting on. I have a Raptor hood with a fan that blows the air out with vents I also run a dehumidifier and now my humidity is 35 percent.I have 2 fans circulating air , the plants are very large and very healthy. the co2 is coming from a plastic bottle which lasts 2 weeks, and has to be shook once a day. I had to make several changes because the humidity was very high and the mylar was wet all over. The first change was two circulating fans that help a little but it did not solve my problem .Next I started with a small heater to bring the temp up to 65 when the lights were out, and last I have a good size humidifier I had the tent inside a 14 by 20 room, I kept the unit outside the tent put one fan outside and let it blow outside into the tent with the dry air and now my air is just right, thanks for all your help. The co2 is in a plastic container .I am not sure what the co2 readings are,but the plants are beautiful so far, I am going to send the pictures so all can see, Thanks again for all the help.