co2 all the time or in cycles??
- Thread starter doniawon
- Start date
slomoking13
Well-Known Member
the goal is around 1500 ppm the whole time the lights are on during flower. i don't know what else to say really because i don't know what type of system you are using or what levels you are at now.
doniawon
Well-Known Member
ill throw a pic up.. but i have a 50 pound cylinder with regulator
room size is 15x13 with 8 foot ceiling.. sealed room styrofoam walls with panda film on inside and outside of the walls and on the ceiling..
2 air cooled 1000's and one vertical 1000 to keep the temps at 90. humidity holds at 60 and a 6' carbon fans runs open in the room
room size is 15x13 with 8 foot ceiling.. sealed room styrofoam walls with panda film on inside and outside of the walls and on the ceiling..
2 air cooled 1000's and one vertical 1000 to keep the temps at 90. humidity holds at 60 and a 6' carbon fans runs open in the room
slomoking13
Well-Known Member
didn't feel like trying to explain this so i'm copying and pasting lol
PRESSURIZED CO2 ENRICHMENT SYSTEM ARRANGEMENT
This method allows for the injection of a controlled amount of CO2 into the growing area at a given interval of time. The pressure regulator reduces the compressed gas pressure from 2200 lbs./square inch to a more controllable amount (100 to 200 PSI) which the flow meter can handle. The flow meter will deliver so many cubic feet per minute of CO2 to the plants for the duration of time that the solenoid valve is opened. The timer controls the time of day and length of time that the solenoid valve is open.
To operate this CO enrichment system in our standard 8' X 8' X 8' grow room area, we want to add enough CO to increase the near depleted level of 200 PPM to 1500 PPM. We must then add 1300 PPM of CO2 to a volume of 512 cu. ft. We would like to do this in intervals of time relative to the natural air exchange rate (leakage rate) to keep the CO level near the 1500 PPM range.
Let's select an injection time interval (CO2 enrichment time) of every two hours. First, we must determine how many cubic feet of CO2 must be added to 512 cu. ft. of volume to increase our 200 PPM to 1500 PPM. To do this, multiply the room volume of 512 cu. ft. by .0013 (1300 PPM) to obtain 0.66 cu. ft. of CO2 that is needed. Set the regulator at 100 PSI and the flow meter at 20 CFH (Cubic Feet per Hour) or 0.33 cubic feet per minute. If we set our timer to stay on for two minutes every two hours, we will get the 0.66 cubic feet of additional CO we need to bring the CO level to the 1500 PPM optimum level needed.
Each pound of CO compressed gas contains approximately 8.7 cubic feet of CO gas at atmospheric pressure. Compressed CO2 costs around 50 cents/lb. at most supply houses. At that rate of 0.66 cu. ft. every two hours for 18 hours per day, this method will cost around 30 cents per day to operate. The timer should be set to deliver CO2 during the "on time" (daylight time) for which the lights are set. This is the only time the plants can use CO2; they do not use it when it's dark.
The compressed gas method of CO enrichment has the advantages of fairly precise control, readily available equipment ($150.00 to $300.00 average cost for an installation) and it does not add extra heat to the growing area. It also works well for small growing spaces and after initial equipment costs, is not expensive to operate.
1560*.0012=1.872 cubic feet of c02 every 2 hours. so set your regulator to 100psi and set the flowmeter to 20 cubic feet per hour. 20 cfh is (20/60) .33 cubic feet per minute when the regulator is turned on. 1.872/.33 would be roughly 5.7. So every 2 hours you would want your tank to be on for roughly 5.7 minutes. You could just say 6 to account for any leaks. If you wanted it to kick on every 4 hours you would run it for 12 minutes 3 times a day at 100psi with the flowmeter set on 20cfh. Hope this helps, if anything it shows you the math. If you don't feel like doing all this, spit out about 400 bucks and get a co2 monitor and controller. that's the easiest way to ensure you are being most efficient with your co2.
PRESSURIZED CO2 ENRICHMENT SYSTEM ARRANGEMENT
This method allows for the injection of a controlled amount of CO2 into the growing area at a given interval of time. The pressure regulator reduces the compressed gas pressure from 2200 lbs./square inch to a more controllable amount (100 to 200 PSI) which the flow meter can handle. The flow meter will deliver so many cubic feet per minute of CO2 to the plants for the duration of time that the solenoid valve is opened. The timer controls the time of day and length of time that the solenoid valve is open.
To operate this CO enrichment system in our standard 8' X 8' X 8' grow room area, we want to add enough CO to increase the near depleted level of 200 PPM to 1500 PPM. We must then add 1300 PPM of CO2 to a volume of 512 cu. ft. We would like to do this in intervals of time relative to the natural air exchange rate (leakage rate) to keep the CO level near the 1500 PPM range.
Let's select an injection time interval (CO2 enrichment time) of every two hours. First, we must determine how many cubic feet of CO2 must be added to 512 cu. ft. of volume to increase our 200 PPM to 1500 PPM. To do this, multiply the room volume of 512 cu. ft. by .0013 (1300 PPM) to obtain 0.66 cu. ft. of CO2 that is needed. Set the regulator at 100 PSI and the flow meter at 20 CFH (Cubic Feet per Hour) or 0.33 cubic feet per minute. If we set our timer to stay on for two minutes every two hours, we will get the 0.66 cubic feet of additional CO we need to bring the CO level to the 1500 PPM optimum level needed.
Each pound of CO compressed gas contains approximately 8.7 cubic feet of CO gas at atmospheric pressure. Compressed CO2 costs around 50 cents/lb. at most supply houses. At that rate of 0.66 cu. ft. every two hours for 18 hours per day, this method will cost around 30 cents per day to operate. The timer should be set to deliver CO2 during the "on time" (daylight time) for which the lights are set. This is the only time the plants can use CO2; they do not use it when it's dark.
The compressed gas method of CO enrichment has the advantages of fairly precise control, readily available equipment ($150.00 to $300.00 average cost for an installation) and it does not add extra heat to the growing area. It also works well for small growing spaces and after initial equipment costs, is not expensive to operate.
1560*.0012=1.872 cubic feet of c02 every 2 hours. so set your regulator to 100psi and set the flowmeter to 20 cubic feet per hour. 20 cfh is (20/60) .33 cubic feet per minute when the regulator is turned on. 1.872/.33 would be roughly 5.7. So every 2 hours you would want your tank to be on for roughly 5.7 minutes. You could just say 6 to account for any leaks. If you wanted it to kick on every 4 hours you would run it for 12 minutes 3 times a day at 100psi with the flowmeter set on 20cfh. Hope this helps, if anything it shows you the math. If you don't feel like doing all this, spit out about 400 bucks and get a co2 monitor and controller. that's the easiest way to ensure you are being most efficient with your co2.
doniawon
Well-Known Member
thanks for the info.. + .. heres my room
but instead of the 20 cfm for 6 min every 2 hours.. could i run it at a much lower cfm like .?? for the full 12 hours, so that the regulator is on the whole time???
and what amount, should i set the regulator.. i think .33 but im still confused?
but instead of the 20 cfm for 6 min every 2 hours.. could i run it at a much lower cfm like .?? for the full 12 hours, so that the regulator is on the whole time???
and what amount, should i set the regulator.. i think .33 but im still confused?
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CAN MAN
Member
dude there in a other side to this ambient air is 300 ppm c02 people grow out side an grow ass kicking buds it sounds like you just want to enrich your air .there are calculators online to help you do this .i dose mind once a day for about 3 min an in return i got 1/4 lb of real good bud we always go ball to the wall light /fan's an c02 . dude all i got to say is pot grows outside an nobody s gassing the shit out of them you do your own thing an see what happen
slomoking13
Well-Known Member
you could but you will never actually reach 1500 ppm. You have a decent size room. If i were going to set it up, i would set it so that my co2 kicked on once every 4 hours, so 3x a day during 12/12. Once about 20 mins after the lights come on, once 4 hours after the lights have come on, and once 8 hours after lights came on. I would run it at 10 cfh which means it would have to run for 11 minutes each time 3x a day. according to the calculator i used, the 50lb cylinder should last you about 80 days doing this. just a hint, depending on the size of the room and the amount of plants, most growers will have the co2 run anwhere between 2-6 times a day. I find it's most economical to calculate it so that your bottle will last the whole flowering period in your situation, which would be about 3x a day for you.
http://www.hydroponics.net/learn/co2_calculator.asp
http://www.hydroponics.net/learn/co2_calculator.asp
doniawon
Well-Known Member
i too dose my mind.. but im going for max results. and co2 at 1500 ppm is optimus prime.. im think im going balls to the wall.. week one of flower and im sittin with these
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slomoking13
Well-Known Member
yeah, and the sun puts off about 75 watts per square foot. how many growers you know with 14,000 watts of light in the same grow space this guy has?
CAN MAN
Member
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slomoking13
Well-Known Member
my first grow 4 years ago. no c02, only 3 of the plants were 6 weeks in. a few were just put in the room, and a couple more were a couple weeks in.
IronTurtle
Member
I usually run my co2 for 2.5 hours right when the light comes on and then 15 min off and 15min on for the rest of the time the light is on. seems to work well.
turtle
turtle
slomoking13
Well-Known Member
what cfh is your regulator set at?
IronTurtle
Member
I have mine set at 0.05. My grow space has a cubic volume of 208 cubic ft.
CAN MAN
Member
i clone from a mother but not flowering
CAN MAN
Member
NOW THAT A LOT OF WATTS i bet you could cook a chicken in there let me know when it's done we'll get high an eat that motherfuck
doniawon
Well-Known Member
your weird.. and wtf are you talkin about.. you obviously dont use co2 and your plants are way weak. so why??
sorry for bein a dick. also good advice ironturtle.. my space is 1800 so what would you run in that senario??
IronTurtle
Member
With your space I would bump that up to about .35/hr or maybe a little higher. Again, make sure you run the co2 for 2.5 hours on when the lights start and 15 on and 15 off after that until the dark period. You should be golden.
Turtle
Turtle
slomoking13
Well-Known Member
hey ironturtle, just noticed you are from illinois... which part?