co2
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mindphuk
Well-Known Member
Please clarify what you are unsure about. Adding CO2 will allow the plant to maximize its ability to fix carbon. Generally, you shouldn't worry about CO2 unless you have everything else dialed in otherwise it isn't your limiting factor. Plants have the ability to use much more CO2 than is present in our atmosphere. However, that's like saying the human body can utilize much more protein than is in most everyday meals, but if muscle growth isn't already being pushed to the extreme by exercise, then the protein is just wasted.
Good analogy about the exercise.
Assuming I have everything dialed in, I have heard that temps should be slightly higher in order for the plant to make use of the CO2. I also heard that the plant will be metabolizing more, hence the growth, and will need more carbs to turn into sugars, much like humans. Do either of these claims have any credence? Thank you for the responses
JACKMAYOFFER
Well-Known Member
Go to my journal in my sig I have well documented what C02 will do 5 foot tress in 30 days... With 2 lbs per ligt possible with a sealed room and co2..Good analogy about the exercise.
Assuming I have everything dialed in, I have heard that temps should be slightly higher in order for the plant to make use of the CO2. I also heard that the plant will be metabolizing more, hence the growth, and will need more carbs to turn into sugars, much like humans. Do either of these claims have any credence? Thank you for the responses
JACKMAYOFFER
Well-Known Member
Would not grow with out CO2 I run a 24,000 btu ac unit my temps stay at 78 deg when its 100 out side I also vent my lights with air I pull in from the attic...You cannot run 1000 w fixtures and not have ac ..At least not where I live...
RickWhite
Well-Known Member
CO2 is said to increase growth by up to 30% if you have adequate light and are growing hydroponic. Temp should be around 75 as ussual IIRC. Carbohyderates and sugars have nothing to do with it unless you are growing in soil and counting on microbial action to break these down. Anyway soil pretty much makes CO2 enrichment pointless. Plants generaly use nitrogen, phosphorous and potasium n-p-k as their main nutrients with other stuff in small amounts. The CO2 is used durring photosynthesis to ultimatly produce ATP and ultimatly growth IIRC but I'm not blowing the dust off my old biology texts to go more in depth on this. Hell just google photosynthesis. Anyway, if you have good lighting and a good hydro setup CO2 is great and it's cheap. My friend has been running the same 20lb tank in a 12X12 room for several weeks it's like $12 to fill.
mindphuk
Well-Known Member
Quite incorrect. Maybe you should dust off those old books or google it yourself.
I really don't understand why you would give out information if you really didn't know the answer and was just taking a stab at it.
Hydro or soil is irrelevant. The only difference between those two are the medium the roots are in. It has zero to do with photosynthesis and carbon fixation. Plants in soil use CO2 in the atmosphere in exactly the same way as hydro and the more CO2, the better it can take those carbon molecules and use them to make carbohydrates. If you notice, the macronutrients, NPK, do not include carbon. The plant needs CO2 no matter where it's growing and what kind of nutrients are being delivered at the root zone.
RickWhite
Well-Known Member
Well my major was molecular biology so I don't exactely need an explaination of why plants need CO2.
What you are missing is that when plants are grown indoors under artificial light and grown in soil the soil is such a limiting factor in the plants growth that it is essentially pointless to use CO2 because the plant isn't growing fast enough to take advantage of it.
Cervantes writes the same thing in the Grower's Bible FYI. But I guess he doesn't know what he is talking about either.
justsaymint
Well-Known Member
if u majored in molecular biology why the fuck are smoking/growing weed
mindphuk
Well-Known Member
Well then Cervantes is full of shit too. BTW, I've found plenty of errors in Cervantes' book, especially older editions.
Give me a page or chapter number, I highly doubt that his comment had anything to do with CO2 supplementation. Explain how the soil is a limiting factor when you can use the same exact soil from outdoors, indoors as well? Why don't you read some of Subcool's wicked indoor grows using his super soil. I also dare you to find anywhere that he says soil is a limiting factor. The factors that are traditionally considered limiting are light, nutrients and water. Explain to us exactly how soil can be a limiting factor Mr. biology undergrad major. CO2 has been in use in greenhouses for decades, and yes, they grow in soil for the most part
Maybe you should have looked up this information before you come here and spout off incorrect information. I notice you say your major was molecular biology, not that you have a degree or are a professional actually working in the biological sciences.
skunkiefun
Active Member
CO2 is beneficial to soil and hydro. It might help hydro a little better because the growth rate is already faster than soil but by no means is soil a hindering factor when using CO2.
mindphuk
Well-Known Member
Well that doesn't seem to stop people from getting baked and then come in here giving out incorrect info.
I'm still waiting with anticipation to find out from Rickwhite where exactly in his book Cervantes says CO2 is only good in hydro and how soil can be a limiting factor as a growth requirement.
RickWhite
Well-Known Member
Why don't you buy it and read it. I've got better things to do than argue with you. You don't have the slightest idea of which you speak.
Let me make it simple enough for even you to understand. Suppose a guy had a plant and he was growing under a 100W incandescent bulb and he asked if CO2 enrichment would increase his yield. The answer would clearly be no because his lack of sufficient lighting would be a limiting factor. Plants only benefit from extra CO2 under conditions that are prime for growth. A plant in say a DWC will grow at least 3 times as fast as in soil. With such fast growth extra CO2 will boost growth. In soil, the plants probably aren't using all the CO2 available in plain air.
It's like Michael Phelps saying he eats 6,000 calories per day when he trains. That's because an olympic swimmer needs many calories. A couch potato on the other hand would not use nearly that many calories. Same concept.
Just please, don't get on the internet and pretend to know about stuff you don't know squat about and question people who really do.
mindphuk
Well-Known Member
You are too fucking stupid for words. You don't know who the hell you are talking to or what the fuck you are saying. Quit trying to be an internet know-it-all and sit back and learn for once in your life.
Every single thread you've been involved in at RUI you seem to try to be the contrarian to everything, UV light, FLIR, now CO2.
You obviously didn't read my previous posts in this thread, otherwise you would have seen that I do know what the fuck I'M talking about.
You made a claim about Cervantes and a book. I've challenged you to provide a reference, even a quote that will support your position. Coming here and telling me to look it up myself makes it pretty obvious to me and everyone else here that you are just full of shit because Cervantes isn't stupid enough to spout that bullshit and If he did, at least he corrected it in the latest version
Trying to continue to claim that soil limits ability to use atmospheric CO2 is quite laughable, especially the part telling me to go use the internet to look it up. ROFLMAO!!! Maybe you should use the interwebz to look up "IRONIC"
I also like the very good start, explaining about the limiting factors in growing. Using the 100w incandescent light for an extreme example, good for a start. You sort of break down when saying DWC grows faster than soil and how that relates to CO2. What is your evidence that a soil plant isn't using all of the CO2 it is given. How do you know that 300ppm isn't like a 200w bulb for the plant?
The fact that I and others here have told you is that plants find 1500ppm CO2 ideal! More is wasted, less will starve the plant, considering there are no other limiting factors -- water, nutrients, or light. That's it. All plants, not just marijuana, and not just indoor growing, all plants on earth everywhere (some might find more ideal, IDK).
If you notice, all of these things are used in the equations for photosynthesis, dirt is no where to be seen. The only difference between hydro and soil is the availability O2 at the roots, that's why hydro grows faster. A plant growing optimally in soil still runs up against CO2 as the limiting factor in the left side of the photosynthesis equation.
Did you sign on April 1st? I know -- you are a sock puppet of a very knowledgeable,, experienced grower here and these posts are supposed to be funny.
mindphuk
Well-Known Member
No my good man. The real winner is TRUTH. Yes it's true, people can pretend to be someone they aren't on the internet, but often, just a bit of searching and reading other sources will eventually lead to some version of the truth and by logical deduction, seperate the wheat from the chaff to use the metaphor. It doesn't always work, especially when the subject has a good deal of interpretation or opnion as is the case with finance and politics, but for areas such as science, botany included, except on the new cutting edge research we are seeing, the facts often come quite easily, and this is a good example. I bet everyone reading this thread that didn't already know this shit, did some of their own googling and came up with the same answers...I just said it in my voice.
I certainly hope mr rickwhite dusted off his biology texts (and his search engine) and finally figured it the fuck out.
mindphuk
Well-Known Member
I would be supporting him if he wasn't ruining our country.
JACKMAYOFFER
Well-Known Member
Thank you I am so sick of random people coming on here spewing out shit they have no clue about or they read one artical and that becomes the truth...If any one belives that CO2 does not benifit when growing in soil visit my journal and try to convince me that CO2 has not benefitted my grow...