I don't think you have to worry about CO2... but maybe dog hairs in your bud
bigtopsfinn Reviewed by bigtopsfinn on . can dog put out enough co2 Ok so I'm always in my grow room maybe like the majority of my day. Do I put out enough co2 for my 5 girls? my dog is always in my grow room too. He's in there maybe 20 hours a day. Rating: 5