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Old 01-02-2018, 04:25 AM #1
toastyghostie
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How fast do plants deplete room co2 (ballpark)

Hi icmag, quick question

I have a scrog with very vigorous plants and a near perfect dialed room. I understand the answer depends on a lot of factors, I'm just looking for your experiences. How quickly do plants deplete room co2 in you guy's dialed rooms? 10 minutes? An hour?

I can't get a proper controller for a few weeks so I'm totally winging it playing with on off timing. Thanks
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Old 01-02-2018, 04:56 AM #2
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assuming

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Originally Posted by toastyghostie View Post
Hi icmag, quick question

I have a scrog with very vigorous plants and a near perfect dialed room. I understand the answer depends on a lot of factors, I'm just looking for your experiences. How quickly do plants deplete room co2 in you guy's dialed rooms? 10 minutes? An hour?

I can't get a proper controller for a few weeks so I'm totally winging it playing with on off timing. Thanks
can you get a crystal test tube
That would give you a reasonable indication,the crystals turn purple by varying amount
normaly very cheap
also co2 ppm moniters are cheap.A
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Old 01-02-2018, 05:15 AM #3
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can you get a crystal test tube
That would give you a reasonable indication,the crystals turn purple by varying amount
normaly very cheap
also co2 ppm moniters are cheap.A
Very good to know

https://growershouse.com/desktop-co2-monitor

$124.10

I'm trying hard not to buy stuff from Amazon.


Usually, "dialed room" means, great ventilation, input and output fans.

The less ventilation you have, the more the CO2 can compensate.

"can't get a proper controller for a few weeks so I'm totally winging it playing with on off timing" implies you have a CO2 source and you're switching a valve on and off ?


I would go easy on the Plant Care-taker (that's you) and give it 5 minutes of CO2 once an hour.
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Old 01-02-2018, 06:56 AM #4
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desktop monitor

TIM10 CO2meter.com
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Old 01-02-2018, 07:17 AM #5
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The test tubes are $20 for one use at my store seems like a waste when there's $100 digital monitors.

By dialed I mean I have a proper room with all the bells and whistles to maintain ideal conditions/vpd. I just have on off variables for the co2 instead of a fancy co2 controller.

It takes my generator 15 minutes to fill the room so I set it 15 minutes on and 25 minutes off. This is broken by 1 or 2 ventilation cycles a night.

I think I'm just going to spend my food money on one of these
https://www.amazon.com/Autopilot-Des.../dp/B01FYWU2IS
Beans and rice ain't that bad
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Old 01-02-2018, 07:27 AM #6
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As long as you have proper air exchange with outside air you will never run out.
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Old 01-03-2018, 07:44 PM #7
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Brilliant..

The answer in my case was 1400ppm to under baseline in 10-15 minutes. I was way under
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Old 01-03-2018, 08:16 PM #8
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I would say it happens very quickly. Minutes, not hours. Here is a shot of my RPi monitor. As you can see, when the lights go out and the plants don't use the CO2, the rate goes up rather quickly.

When the lights go on, the rate drops from the 800+ range down to 400 in just a very short time. I never measured it but, it would be easy enough to do. It's minutes, not hours, for sure.

Hope this helped a little.

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Old 01-03-2018, 10:12 PM #9
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Thanks ringo that's exactly the input I was looking for.

What is that management software an arduino deal?
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Old 01-03-2018, 10:17 PM #10
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Quote:
Originally Posted by toastyghostie View Post
The test tubes are $20 for one use at my store seems like a waste when there's $100 digital monitors.

By dialed I mean I have a proper room with all the bells and whistles to maintain ideal conditions/vpd. I just have on off variables for the co2 instead of a fancy co2 controller.

It takes my generator 15 minutes to fill the room so I set it 15 minutes on and 25 minutes off. This is broken by 1 or 2 ventilation cycles a night.

I think I'm just going to spend my food money on one of these
https://www.amazon.com/Autopilot-Des.../dp/B01FYWU2IS
Beans and rice ain't that bad
how bigs your room?

15mins is really quick. ive been wonderingthe same.

just checked your link and that unit seems pretty good.
exactly what im looking for.

seems quiet acurate from the reviews.
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