Co2 for my small grow?

Waxwingz · Apr 2, 2020

Hey everyone!

So I’m curious about co2. Do I need to add extra co2 to my small grow tent/green house. I looked up diy methods and also retail options on amazon. So my question is
1. do I need extra co2 for my situation (two plants, see pics)
2. how much should I add? would one of the smaller retail options be sufficient?
3. Any diy co2 suggestions!

MIMedGrower · Apr 2, 2020

Co2 is only helpful if you run very high intensity lights and requires a sealed room or it gets wasted. You can just make sure you have plenty of ventilation and do very well.

Waxwingz · Apr 2, 2020

Ok cool, thanks for the info. trying to keep this run as simple as possible

ezenzyme · Apr 2, 2020

You can put mineral water on em' Co2 straight to the roots. they love it! id wait until they are larger. There is also a Co2 product thats not a gas forgot what it is atm

1diesel1 · Apr 2, 2020

I used these years ago.
They work well if you can keep it as air tight as possible

Smoking Gun · Apr 3, 2020

ezenzyme said:
You can put mineral water on em' Co2 straight to the roots. they love it! id wait until they are larger. There is also a Co2 product thats not a gas forgot what it is atm

Please do not listen to this, this is just straight up bad advice. To start plants roots do not need or want CO2, at the roots it is all about O2 levels. The more oxygen we can get to the root zone the happier and healthier your plant will be. Second, adding mineral water to your medium will just cause build ups you do not want. The minerals in there are not typically useful for growing and as I said before can lead to toxic salt build-ups in your medium.

As for CO2, I usually recommend that new growers do not mes with CO2. There are so many other variables to learn about growing a healthy plant before worrying about CO2 addition. Just make sure you have good air flow in your growing space, this means new air in and old air out on a regular basis as well as circulation through your grow space.

Personally I would ditch that plastic tarp thing you are growing in and invest in a real grow tent. That plastic thing you are growing in has no ability for air to flow properly around the space. You have to keep that front flap open just to get air in, and maybe some is able to get out through there as well. A proper grow tent will have port built in to allow for ventilation and air flow. My second issue with what you are growing in is that unless you do not ever go into that space when its time for lights out you will always have problems flowering out your plants; Cannabis needs 12 hours of dark to trigger the flowering reaction and prevent the plants from reverting back into vegetative growth (under the assumption you are growing photo-sensitive plants and not auto-flower plants). Because that plastic is clear, there is no real advantage to having it inside your home, those were meant to be used outside to get plants started while the weather is still cool and not ideal for planting in the groud yet. It would hold some of the warmth in and protect young plants from cold winds and light frosts. Inside we are not dealing with any of that, so you could have simply put your plants on a table with the light suspended above it.

I am sorry if this sounds negative, I am not trying to get you down. I just see a lot of future issues that I am trying to make you aware of before they arise.

ezenzyme · Apr 3, 2020

I lay mineral water on my outdoor plants all the time, the 250 ppm that i tested it to be is made up of exactly the same salts and minerals that you find in your tap, or any water that has not been treated. These are some of the most commonely found minerals found in mineral water.
calcium

magnesium
potassium
sodium
bicarbonate
iron
zinc
Mineral water is called that because its bottled at the source from a mineral spring( a spring would be a dream come tru to me!!) This being said i am not spreading information i did not vet and use myself(once a month shits expensive!!).... Smoking gun is right, when dealing with your small indoor set up your best bet is to keep it simple, watch the plants grow and not hit them with tons of un nessicary and random(possibly bad) advice found on forums lol. There is no need to fix something thats not broken.

Terpz719 · Apr 3, 2020

You can't just throw extra CO2 at the plants and expect increased growth and yields without balancing other factors. For the plant to use the extra CO2, you need more light and warmer temps. The higher transpiration rate will necessitate more water and nutes. It's a balancing act. As others said, doing so without a sealed environment presents other challenges as well.

Terpz719 · Apr 3, 2020

ezenzyme said:
I lay mineral water on my outdoor plants all the time, the 250 ppm that i tested it to be is made up of exactly the same salts and minerals that you find in your tap, or any water that has not been treated. These are some of the most commonely found minerals found in mineral water.
calcium

magnesium

potassium

sodium

bicarbonate

iron

zinc

Mineral water is called that because its bottled at the source from a mineral spring( a spring would be a dream come tru to me!!) This being said i am not spreading information i did not vet and use myself(once a month shits expensive!!).... Smoking gun is right, when dealing with your small indoor set up your best bet is to keep it simple, watch the plants grow and not hit them with tons of un nessicary and random(possibly bad) advice found on forums lol. There is no need to fix something thats not broken.

I think the main point was/is that roots don't use CO2. They need O2. The leaves use CO2.

Anthem · Apr 3, 2020

ezenzyme said:
I lay mineral water on my outdoor plants all the time, the 250 ppm that i tested it to be is made up of exactly the same salts and minerals that you find in your tap, or any water that has not been treated. These are some of the most commonely found minerals found in mineral water.
calcium

magnesium

potassium

sodium

bicarbonate

iron

zinc

Mineral water is called that because its bottled at the source from a mineral spring( a spring would be a dream come tru to me!!) This being said i am not spreading information i did not vet and use myself(once a month shits expensive!!).... Smoking gun is right, when dealing with your small indoor set up your best bet is to keep it simple, watch the plants grow and not hit them with tons of un nessicary and random(possibly bad) advice found on forums lol. There is no need to fix something thats not broken.

Perhaps you should check your outdoor soil. If the plants respond to the mineral water as you have indicated, the soil might need to be amended.

ezenzyme · Apr 3, 2020

I doubt it, its a fresh mix this year its 1/3 peat 1/3 quality compost and 1/3 lava rock mixed 50/50 with old dirt(coco and pearlite) leaving the nice basalt dust in it. Amended with a cup and a half of neem seed, kelp meal, Bio live, oyster shell and guano. Last year i mixed it with lotsa green sand, volcanic elements and Azomite, so with the added lava rock dust(basalt) i assume i have plenty of minerals....I got that mineral water tip from KC Brains, a well know breeder and outdoor grower across the pond. I have my own thread going covering my outdoor 2020 season, and would love any input!
Regardless, and back on topic, those seedlings look fine, no need to fix something thats not broken; although some thoughtful prevention is always smart, such as the problems that may arise from having a clear grow room with no air flow.....My thoughts would be to follow the Legion of Living soil thread, for soil and nutrition it covers pretty much all you need to know. The main point is Co2 is not needed. Smoking gun has the most on point thoughts, money best spent would be on a real room, and if you ask me secondly on quality dirt.

PeaceLuvNblunts · Apr 3, 2020

Think just keep it simple .....
Looks good for what you've got dude just keep on watching them ...
Don't over complicate things too quick, master one aspect at a time co2 perhaps a few crops later have good success with fermentation co2 but been doing it over 10 years and still learning loads never ends just so fun .....

Yes Deffo going to need a good grow tent lots of natural venting and good hps/mh bulbs or led,worth the investment.

Then move to every aspect one at a time

This is my first time using co2 check ....

Waxwingz · Apr 4, 2020

Smoking Gun said:
Please do not listen to this, this is just straight up bad advice. To start plants roots do not need or want CO2, at the roots it is all about O2 levels. The more oxygen we can get to the root zone the happier and healthier your plant will be. Second, adding mineral water to your medium will just cause build ups you do not want. The minerals in there are not typically useful for growing and as I said before can lead to toxic salt build-ups in your medium.

As for CO2, I usually recommend that new growers do not mes with CO2. There are so many other variables to learn about growing a healthy plant before worrying about CO2 addition. Just make sure you have good air flow in your growing space, this means new air in and old air out on a regular basis as well as circulation through your grow space.

Personally I would ditch that plastic tarp thing you are growing in and invest in a real grow tent. That plastic thing you are growing in has no ability for air to flow properly around the space. You have to keep that front flap open just to get air in, and maybe some is able to get out through there as well. A proper grow tent will have port built in to allow for ventilation and air flow. My second issue with what you are growing in is that unless you do not ever go into that space when its time for lights out you will always have problems flowering out your plants; Cannabis needs 12 hours of dark to trigger the flowering reaction and prevent the plants from reverting back into vegetative growth (under the assumption you are growing photo-sensitive plants and not auto-flower plants). Because that plastic is clear, there is no real advantage to having it inside your home, those were meant to be used outside to get plants started while the weather is still cool and not ideal for planting in the groud yet. It would hold some of the warmth in and protect young plants from cold winds and light frosts. Inside we are not dealing with any of that, so you could have simply put your plants on a table with the light suspended above it.

I am sorry if this sounds negative, I am not trying to get you down. I just see a lot of future issues that I am trying to make you aware of before they arise.

PeaceLuvNblunts said:
Think just keep it simple .....
Looks good for what you've got dude just keep on watching them ...
Don't over complicate things too quick, master one aspect at a time co2 perhaps a few crops later have good success with fermentation co2 but been doing it over 10 years and still learning loads never ends just so fun .....

Yes Deffo going to need a good grow tent lots of natural venting and good hps/mh bulbs or led,worth the investment.

Then move to every aspect one at a time View attachment 957053

This is my first time using co2 check ....

Looks amazing! I plan on upgrading my grow space eventually, I alway just try and go as diy/household scavenged as possible, especially considering it’s my first indoor grow. Thanks for the advise

PeaceLuvNblunts · Apr 5, 2020

Yes dude all my first grows were home made so much fun just when you start fine tuning few of my top tips in order
Fudging good lighting
Fudging good ventilation
Good measuring tools ppm and ph
(I like basic ph pens about £5 and can't beat the blue lab truntion never let me down after 11 years it's just about still going ......)
Tent (trojan tents for me strong zips can litterally hang of the poles i weigh 11 .5 stone as when the zips gone the tents fudged....)
CANNA nutrients (but must have good measuring as what they say to use is crazy...)
Perlite and loads of it i run high strenghth compost with equal parts perlite ....
And most of all enjoy it cheers...

Co2 for my small grow?

Co2 for my small grow?

Waxwingz

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