umm well yes heat goes up a little but plants do better with co2 regardless u can run higher temps with it.if u have problems after the fact than these are issues allready happening in your room but the small amount of added heat sets off the exsisting problems,u need to adapt 2 your changes.having a ppm gauge lets u know exactley how much ppm is being released.monitors are nice,maybe barrow one from a friend,waste a tank or 2 just trying to perfect your strategy.co2 ppm meters are nice,and help a lot but just like any thing else can foul up.learn your room and its requirements and u will never need 2 worry about wether or not a piece of electrical equipment has failed to register the proper amount of co2 in your room.