ventalation?????????

i know plants dont use as much CO2 when the lights are off, but i was wondering. i have a 8x8x6 room with a 6in intake and a 6in exshaust inline fan with a 5000btu a/c unit.my light is on at night to use freash air to cool the room and the a/c unit is used during the night cycle to drop temp in room. can i put both my intake and exshaust fans on timers to turn off for a 30 min and on for 15 min. they stay on when the light in room is on but am trying to save wear and tear on a/c unit. figure if i was not moving the air so fast when the light was off the a/c would not work as hard cooling the room. i know fan speed controlers would work great but i cant afford them at moment but i do have 2 timers on hand. so will it hurt my plants to leave all the osilating fans in the room on for circulation but turn off the intake and exshaust fans for 30 min at a time when the lighs are out?

30 minutes at a time... no problem

420smokingjoe said:

i know plants dont use as much CO2 when the lights are off, but i was wondering. i have a 8x8x6 room with a 6in intake and a 6in exshaust inline fan with a 5000btu a/c unit.my light is on at night to use freash air to cool the room and the a/c unit is used during the night cycle to drop temp in room. can i put both my intake and exshaust fans on timers to turn off for a 30 min and on for 15 min. they stay on when the light in room is on but am trying to save wear and tear on a/c unit. figure if i was not moving the air so fast when the light was off the a/c would not work as hard cooling the room. i know fan speed controlers would work great but i cant afford them at moment but i do have 2 timers on hand. so will it hurt my plants to leave all the osilating fans in the room on for circulation but turn off the intake and exshaust fans for 30 min at a time when the lighs are out?

Click to expand...

they have thermostats for fans that will turn them on and off at certain temps.. Cut my ac usage in half by doing this.

yeah but i can't afford 2 temp controllers of those right now, but i do have 2 timers handy so. i was gonna try 30 min off 15 mim on while the lights are off. on both my intake and exhaust fans was wondering if they would run out of CO2 since they don't use much when lights were out

You won't have any problem with co2 as long as you keep air moving..

yeah i have 4 fans inside the room moving air inside that would never turn off and figure every 30min or 45min the intake and exhausts fans come on for 15 min should keep the co2 good why the lights are off. just figure this will help keep my a/c from running more often. while the lights are on my intake and exhaust never shut off but snce it takes a min to exchange the air in my room the a/c runs all the time it cant keep up with the in-line fans. so the electric bill goes up and the a/c takes alot of wear n tear.i dont use hoods i use freash air to cool the room as i said earlier the night air is enough to keep my room at round 80deg anything higher than 82 i turn the a/c on to keep temp below 82. you can see my bigger room on you tube that is also kinda the same as room i talking bout now search 420smokingjoe on you tube to see. i am gonna try this on my small room first before i do this in my larger room which is 8x15x6. my girls are only 2ft tall but bout very bushy. thanks for your info!!!