i have my growroom in the basement of my house .the growroom is right under the master bedroom .if i use co2 in the growroom could the co2 gas leak into the bedroom and gas the people in the bedroom ?
You're supposed to be enriching the environment, not soaking it. The average CO2 system puts off no more CO2 than a furnace running for 30 minuets, or at least that is to say the exhaust from the furnace that escapes into the house.
If your furnace exhaust is leaking into your house, you have problems. To the OP. How much CO2 are you gonna generate? CO2 is heavier then air so it would have to flood the basement before it would even start to displace enough oxygen to take out a room above it. If your really concerned: Carbon Dioxide Detection for Indoor Air Quality monitoring and control