GroErr Grows...
ttystikk
Well-Known Member
Wherever it's coming from, a little excess CO2 is of course not a bad thing- I'm just the type who needs to know its source.
Are there people and/or pets in the house all day? Water heater? Anything else using gas? The outside environment is now above 400ppm worldwide, at least a third of which is a direct result of human activity. I'm just curious about the difference between that and what you're measuring. It's possible that if you're close to a busy road you might be getting it there?
Are there people and/or pets in the house all day? Water heater? Anything else using gas? The outside environment is now above 400ppm worldwide, at least a third of which is a direct result of human activity. I'm just curious about the difference between that and what you're measuring. It's possible that if you're close to a busy road you might be getting it there?
GroErr
Well-Known Member
Yeah those sensors are cool and nice tools to have for dialing in rooms/tents quick. You can set the intervals for each unit to whatever you want, I have them set to report every 15 minutes which gives me 2 weeks available for download if I want to keep the history. There's an app or you can just use a web browser to access the dashboard anytime.
On the newer one's each unit has 2x temp sensors, one is on a cable so you can measure temp at 2 levels at the same time + RH wherever the unit is sitting, you can see the one in the flower room, the white thing on the left wall. it's one of the older one's and just measures at the unit level, I try and sit it at canopy level and middle of the footprint. They're wireless so they can be moved around and the attachments like the wet sensor just plug into the bottom. It can be used in water like my cloner, or soil. They're not that expensive and I just replaced my first one which was around 4 years old and bought another so I have 4 now. I only have one of the wet probes and I move that to any unit.
You have to buy one complete kit with the station, and then you can connect up to 5x sensors to that station. here's more info on them.
http://www.lacrossetechnology.com/temperature-and-humidity-monitor-and-alert-system-with-wet-temperature-probe/
green217
Well-Known Member
Thanks for the link!
I will be investing in one soon, price is definitely worth it.
redi jedi
Well-Known Member
People are Co2 sources....Co2 being heavier than air...basements are below ground...common man!
GroErr
Well-Known Member
Yeah I get it, I think it's a variable in a house depending on activity. You're right on the gas, water tank and dryer sit down there, they're both gas. Everything else like washer, stove are electric.
ttystikk
Well-Known Member
And that's fine if that's the cause, bro.
GroErr
Well-Known Member
I'll say they are (people), I went into the room and it was sitting at 540'sh, closed the door and stood a couple of feet from the sensor for about 5 minutes watching it go up. It was still increasing as I took the pic below, it increased by 200 ppm by the time I left. Lesson: Spend more time in the garden - lol
redi jedi
Well-Known Member
We exhale 2200-2500ppm with every breath.
GroErr
Well-Known Member
We'd have to, to make that much of a difference and that fast in a 4x9.5x7' room. Or I could just be full of hot air as they say - lol
ttystikk
Well-Known Member
My concern was for the nature and safety of the source, that's all.
Basements are awesome places to grow for lots of reasons lol
GroErr
Well-Known Member
Oh yeah realize that, always good to know the cause. Looks like just normal daily activity can increase it in the house quite easily, but it also seems to drop back to normal levels quite fast. I really hadn't looked at or considered CO2 levels. So far looks normal in the 500-600 range throughout the house, basement looks more like 600-800 depending on what's going on. Pretty sure the first readings I grabbed were higher due to having the washer/dryer going all day (dryer is gas and so is the hot water tank supplying the washer).
From what I've read I think the only time you'd need to be concerned is if your readings were 1,000+ ppm constantly and you had no explanation as to what was raising and keeping them at those levels. I don't have a lot of people in the house normally, myself, GF & cat but readings in the kitchen while we were all there and cooking were in the 1,000 range. Left the sensor there for an hour while we were in other areas of the house and it was down to 600. Next time I have a bunch of people in the house, specially winter with everything closed up, I'll try and remember to take some readings, betting it could get into the 1500-2000 in the kitchen.
ttystikk
Well-Known Member
The conventional wisdom is that 1500ppm is best for growing plants faster.
There is also plenty of research that shows plants growing fewer stoma in such conditions, because they don't need as much surface area to take it up.
I've also heard that some people are experimenting with running their CO2 supplementation in bursts, although I haven't seen a lot of numbers on the timing.
I'm running mine in one hour on and one hour off cycles during daytime hours, my thinking is that I don't want the plants to get used to a constant high level and see the effectiveness of the technique be undermined.
There is also plenty of research that shows plants growing fewer stoma in such conditions, because they don't need as much surface area to take it up.
I've also heard that some people are experimenting with running their CO2 supplementation in bursts, although I haven't seen a lot of numbers on the timing.
I'm running mine in one hour on and one hour off cycles during daytime hours, my thinking is that I don't want the plants to get used to a constant high level and see the effectiveness of the technique be undermined.
GroErr
Well-Known Member
Yeah the science is there and makes perfect sense for CO2 supplementation. I personally wouldn't bother as I grow more than I need as-is and it looks like a pain in the ass, plus red flag (carrying tanks in/out of the house) and more work. The alternative imo is getting them as much fresh air as possible which I'm doing already.
ttystikk
Well-Known Member
He's already sporting an elevated co2 number, the difference between 6-800 and 1500ppm isn't likely to be enormous. He's already growing more than he needs. I'd say run it like it is.
Regarding tanks; when you do a weekly run for the tank refill, someone will notice eventually.
Regarding tanks; when you do a weekly run for the tank refill, someone will notice eventually.
GroErr
Well-Known Member
^^^ that right there is the #1 reason I wouldn't bother ^^^
I try and stay well under the radar and plan to stay that way unless/until it's fully legalized, meaning I can grow what I need/want, not what some suit in a government office says I can grow. Not interested in being that red flag or random pick for inspection in a government database. They have as much information on me as I'm willing to give up, driver's license, passport, and tax account. Same reason I stay off that FB site.