Question for those with grow rooms and dehumidifiers

Hey guys, this is a question for those of you who control humidity using a dehumidifier. How much condensate moisture do you collect from your dehumidifier in a given time period? Say, 12hrs or 24hrs, etc... Any info would be greatly helpful to me. Also, if you could give a small description of your room... The size, how many plants, and hydro or terraponics (soil). I ask because I have my hvac cert's and I am building my own sort of "built-in" dehumidifier system and want to size it properly but I've no idea how much these plants respirate... Specially with co2.

Thanks!!