...does an airtight room effect the taste of your crop?

[will_i_am]

....so, I'm about complete with my first co2 grow....I kept co2 ppm @ 1500 during all daylight hours...temps between 75-85f, humidity 30-50...my medium is FFOF, fertilizing with organic teas once weekly... (seabird & bat guano, earthworm castings, kelp, molasses) ...and cal./magic

...okay, I chopped one Big Bud down and gave it a speed dry as I always do...I let it dry and gave a taste smoke...it tasted totally different.

...I'm wondering if anyone else has had this to happen??

What has changed since last grow:
1) I added a double hose a/c unit to keep the airtight room cool
2) I added a co2 burner/monitor
3) I removed the exaust from the carbon filter, now it just circulates the air in the room
4) I added a sulpher burner to prevent powdery mildew
5) I raised my temps up to 75-85

...could the carbon filter change the taste of the bud ? ...or could it be the co2 burner? ...or sulpher burner?

...the buds are no doubt fatter and frostier then my past several crops using freash air.

...fertilizing, medium, ph, humidity all has been treated as my past crops.

[Monseigneur Stroganoff]

speed drying

[nuggdigger]

did you use co2 all the way to chop?

how was it different?

[c-ray]

sulfur in the air will totally change the flavours, more than anything else I would imagine
someone was telling me if one runs the sulfur burner too much sulfur crystals will actually precipitate on the leaves

[Lungus]

Do the buds taste like matches? If so I would expect it's the sulfur burner.

[will_i_am]

speed drying

...I always speed dry one plant but...it never taste like this....your for sure right though, it never taste as good as the properly cured.


did you use co2 all the way to chop?

how was it different?

...yes I have used co2 thus far, all the way through bloom. I have about 3 or 4 more days and hopefully the milky trich will be mostly amber. I've read that some people suggest only running co2 for like 6 weeks....is it bad to run co2 all the way through bloom?:confused2:
...the taste was a premature taste, I've smoked premature big bud before (several times)...and as mentioned, it never has tasted like this. It has a sweet, green smell....and typically the big bud smells/taste a skunky, cheese smell..


sulfur in the air will totally change the flavours, more than anything else I would imagine
someone was telling me if one runs the sulfur burner too much sulfur crystals will actually precipitate on the leaves

...hmmmm!? ...interesting. It didn't taste like sulfer....but, that does logically make good sense. I'm going to switch the burner to burn once daily.

Do the buds taste like matches? If so I would expect it's the sulfur burner.

...naw, don't taste like matches...but, I'm with ya here... that does seem to be the only logical explaination (sulpher burner) I'm thinking.



...this is the most informative site on the net, IMO...if you guys never heard of this, then my issue probably doesn't exist...LOL, MUCH RESPECT to you all....thanks for the response guys!

[plantbuilder]

fuckyouall

[guest]

Yep!
Sulfur burner is the culprit,
would throw that shit out asap...
peace

[will_i_am]

Yep!
Sulfur burner is the culprit,
would throw that shit out asap...
peace

...even though the bud doesn't smell/taste sulferish? ...it's a sweet/premature green taste/smell....weird.

...since I donot vent my room, keeping it enriched with co2 (besides when I open the door)...could I be having a lack of oxygen in the room? ...would that effect the taste? ...again, the yield is better...just this strange taste....hmmmmmmmm!?#%

[guest]

Well, even though you are enriching your room with co2, you should definately have an intake blower with some filtration, wheter hepa or uv, whatever you can afford. Oxygen is of utmost importance...
Do you have a strong dehumidifier? This is a back bone in a scealed room and is imperative to have one.
How is it with the smell? do you find that scrubbing the air within the room works well?
I have found, through many different setups, that you still need a small exhaust on when growing in a hermetic room, just to keep minimal negative pressure, much smaller than if you would be working in constant exchange, but still it needs to be there for humidity and odor control.
Co2 being a heavy gas, it will tend to drop to the ground, this is why you need to invest in overkill air movement through the room to mix the air thoroughly.
You will probably find that for most growing applications, especially in soil, you will not really benefit from that high of a co2 level, you would be more than ok 800 to 1000 ppm...

Even the slight presence of sulfur a couple weeks before harvest will alter the taste and smell of the final product, even a light application of defender will leave a residual taste...It doesn t have to taste like matches or sulfur to notice the ill effects,
the subtelties in taste can be different from strain to strain...
Control the humidity, move your air, filter your intake, you will not need the sulfur burner
One

[will_i_am]

Well, even though you are enriching your room with co2, you should definately have an intake blower with some filtration, wheter hepa or uv, whatever you can afford. Oxygen is of utmost importance...
Do you have a strong dehumidifier? This is a back bone in a scealed room and is imperative to have one.
How is it with the smell? do you find that scrubbing the air within the room works well?
I have found, through many different setups, that you still need a small exhaust on when growing in a hermetic room, just to keep minimal negative pressure, much smaller than if you would be working in constant exchange, but still it needs to be there for humidity and odor control.
Co2 being a heavy gas, it will tend to drop to the ground, this is why you need to invest in overkill air movement through the room to mix the air thoroughly.
You will probably find that for most growing applications, especially in soil, you will not really benefit from that high of a co2 level, you would be more than ok 800 to 1000 ppm...

Even the slight presence of sulfur a couple weeks before harvest will alter the taste and smell of the final product, even a light application of defender will leave a residual taste...It doesn t have to taste like matches or sulfur to notice the ill effects,
the subtelties in taste can be different from strain to strain...
Control the humidity, move your air, filter your intake, you will not need the sulfur burner
One

...sounds good man, I'll polk a hole in the room and ditch the sulpher burner unless I do start to see powdery mildew. I do have a huge fan, and a nice sized dehumidifier. So...do you think I should continue in bloom a little while longer to rid the different taste? Thank ya bro!

[guest]

Well, these pictures look like you could let them go longer anyways, so i would ditch the burner and keep on going until full ripeness.
Idealy when you grow with co2, you have small blower with ducting that sucks the air from the bottom of your room and re distributes it over the canopy and around the room so that it mixes evenly, a simple oscillating fan is minimal for that effect, it needs to be combined with a air stratification mixing strategy for optimum results...

[will_i_am]

...cool! I'll update in a couple weeks....thanks again!

[c-ray]

well said guys

[guest]

yes I! Keep on growing!
one

[Lungus]

Oxygen is of utmost importance..
Wouldn't the plants create enough oxygen for themselves? They are constantly stripping oxygen molecules off of carbon molecules during the day cycle and emitting them into the air.

[guest]

The theoretical analysis of this question makes me say yes to your thesis out of shear reason. Even though i do not know if this oxygen exudate is actually enough oxygen...

But in practice, i notice much healthier and lush growth from intaking filtered fresh air. maybe another, more occult constituent of fresh air is responsible, i do not know.(like biophotons, or prana) But i am a very instinctive grower and do not rely completely on science to back my claims...Just observation and many resources to compare to...
Peace

[Lungus]

Idealy when you grow with co2, you have small blower with ducting that sucks the air from the bottom of your room and re distributes it over the canopy and around the room so that it mixes evenly, a simple oscillating fan is minimal for that effect, it needs to be combined with a air stratification mixing strategy for optimum results...

Hardly necessary. Although CO2 is heavier than oxygen or nitrogen , which compose the greater part of regular air, it's not like throwing a baseball in there. Winds aloft keep hail the size of eggs suspended, do you not think that CO2 molecules in the face of turbulence from an oscillating fan wouldn't stay suspended? Another note on that, if CO2 settles to the floor why doesn't my dog, who spends 80% of his day sleeping on the floor in a still room, die of oxygen deprivation. The only reason CO2 would sink to the floor is if it was expelled from the tank quickly and was substantially cooler than the surrounding ambient air but as it warmed it would still eventually get mixed into the air in the room.

[will_i_am]

Wouldn't the plants create enough oxygen for themselves? They are constantly stripping oxygen molecules off of carbon molecules during the day cycle and emitting them into the air.

...awesome point,...that crossed my mind. Does cannabis make enough oxygen to supply itself?
...Ooops. You guys got to that before I got to post...LOL

[guest]

Very interesting, guess i have been doing all this for nothing then.
I should really re-evaluate my observation skills.
Please Will, forget all i have said in the previous posts and continue what you where doing.
One

ps: to find out, simply put your sniffer on the floor and take readings over 24 hours, then the next day, put your sniffer in the top portion of your grow room and take readings over 24 hours.

[will_i_am]

Very interesting, guess i have been doing all this for nothing then.
I should really re-evaluate my observation skills.
Please Will, forget all i have said in the previous posts and continue what you where doing.
One

ps: to find out, simply put your sniffer on the floor and take readings over 24 hours, then the next day, put your sniffer in the top portion of your grow room and take readings over 24 hours.


...no harm, no foul. The sulpher burner is my main issue here I believe, and your post helped me settle that debate with myself.:drunk:

[Lungus]

Please Will, forget all i have said in the previous posts and continue what you where doing.
One

No, I very much like the idea of keeping a small fan constantly pulling air out of the room through a charcoal filter. It not only makes it easy to keep smell free by keeping negative pressure on the room it is also an economical way to get rid of excess moisture so you don't need a dehumidifier but because of this you will need to use a bit more CO2 to compensate for the air that will come into the room through the cracks around the door, electrical plugs window, frames or wherever as the small fan sucks it out. If you are using a burner it won't cost hardly a thing more in propane but if you are refilling tanks it will be a little more expensive.

[guest]

yes, you are right,
however, a properly scealed room from bottom to ceiling, zippered,tacked and white taped over, will not offer any place for clandestine intake. Just the filtered intake will allow air to come in, and i don t see how this competes with co2 levels, it s only the small exhaust that will compete co2 levels, and only minimally if proper air mix is achieved.

You still need a dehumidifier, even with stronger exhaust...

[nuggdigger]

the dehumidifier will lessen the attack of the pm. here pm is unheard of, due to outdoor humidity levels being lower, location(humidity), location, location.

as far as co2 goes..co2 is part of the photosynthetic process..
during the last couple of weeks of late bloom..the plants do more finishing then actual chloroplast growth..and feed levels are reduced accordingly..also relative to removal of salts/flushing.
less green growth-less eating-less feeding- and i would believe less co2 demands.

i have read in the past some growers feel that co2 in the last 2 weeks may have decreased their quality..
i speculate that this is because the plant is forced to do more photosynthetic growth then stored organic synthesis..

i hope you wash that sulfur crap off the leaves after use...
what do i know..i dont need it;)

peace

[guest]

Yes indeed, nugdigger is right!
Decreasing co2 in the last few weeks of bloom is most wise...
one

[will_i_am]

...I just want to say CW, I've posted this same question on a couple other sites...you guys killed it. By far. (on the bogus sites) I have kids posting, ignorant responses, people argue...it's insane. As in the past, I've brought my plant issues to this site, and I'm always gave accurte info here. Even the hydro store owner's have not a clue on some of my issues.

...you guys, man....I can't say thanks enough, your my best kept secret...LOL

[guest]

cool man, that s nice of you, there are alot of knowledgeable folks here.

If i might just say so, out of the top of my head, just like that, you might want to leave just a bit more leaf on your plant at that time, there still is some way to go on your plants and i see that 70 % of the fan leaves (from what it looks like on the picture) have been removed...Such a severe pruning at this stage of your flowers developement might have stunted it's explosion a little...
One

[will_i_am]

cool man, that s nice of you, there are alot of knowledgeable folks here.

If i might just say so, out of the top of my head, just like that, you might want to leave just a bit more leaf on your plant at that time, there still is some way to go on your plants and i see that 70 % of the fan leaves (from what it looks like on the picture) have been removed...Such a severe pruning at this stage of your flowers developement might have stunted it's explosion a little...
One

...yeah, your pretty on it! I done some lollipop'n 2 wk#2,3 ....then I removed most of the fan leaves @ wk#5.
...I'm really pushing it with 40 ladies in 1 gallon grow bags, under each 600w HPS, so I figured I'd shoot for the upper most buds.
...I'm sure they do get stunted as you mention, but...I seem to get more weight per light this way. I'm pretty close to 1 lb per light.

...I'm open to any suggestions, this is what has worked best for me so far. I'm actually converting everything over to flood beds at the end of this grow, and I plan to use the Lucas Formula.

here's some more pics of my current crop...

[c-ray]

I would guess/hypothesize/surmise that the answer to the co2 question would go something like this:
that air in a given location has a saturation point relative to altitude, the reason that lungus' dog doesn't get choked out is because the difference in the natural saturation/holding capacity of co2 in the air over a few feet is probably only a few ppm, whereas between the top if a mountain and sea level it is much more marked but that is thousands of feet

okay part two of the answer is that when we create/synthesize co2 are we driving the air beyond it's natural saturation point and is this why the co2 drops out and accumulates on the floor of a sealed or otherwise co2 injected room?
I believe the answer is yes
and if that is the case then creating air circulation especially with a lifting action will help distribute the unnaturally co2 over-saturated air and allow for a maximum of co2 distribution and uptake by plants

part 3 would be why do plants need less co2 at the end, well this is not scientific answer but I believe they spend the first part of their life downloading carbon and etc etc etc into their body, root system possibly mainly (like putting money in the bank) and they spend the latter part of their life cycle using up this deposited carbon or bio-processing it like as nugg said...
over fattened buds tend not to taste as nice right?

[will_i_am]

part 3 would be why do plants need less co2 at the end, well this is not scientific answer but I believe they spend the first part of their life downloading carbon and etc etc etc into their body, root system possibly mainly (like putting money in the bank) and they spend the latter part of their life cycle using up this deposited carbon or bio-processing it like as nugg said...
over fattened buds tend not to taste as nice right?

...you my friend, think outside of the box! ...and i bet your onto something! ...I'm hearing ya!

[guest]

Yes I c-ray, thanks.
No box can hold this mind...

Now, Will, i was refering to the amount of leaves on your remaining colas, not the bottom branches, which in your situation where a must to remove...Simply the leaves on the remaining stalks...
one

[Lungus]

Even the hydro store owner's have not a clue on some of my issues

Hydro store guys are generally salesmen, not growers, so take everything they say with a dose of healthy skepticism. Remember they are trying to sell you more crap.

[Lungus]

I would guess/hypothesize/surmise that the answer to the co2 question would go something like this:
that air in a given location has a saturation point relative to altitude, the reason that lungus' dog doesn't get choked out is because the difference in the natural saturation/holding capacity of co2 in the air over a few feet is probably only a few ppm, whereas between the top if a mountain and sea level it is much more marked but that is thousands of feet
Remember C-ray that the ambient CO2 level this low is a relatively new thing on this orb. In times past especially in the tertiary period when broad leafed plants developed ambient CO2 was much higher , around 1000-2000ppm. CO2 didn't settle out of the air in times past because all the ground dwelling animals didn't die so I doubt the maximum saturation level of CO2 in air has dropped in the last couple of million years to make it fall out of suspension now in this modern era.
https://www.cannabis-world.org/cw/attachment.php?attachmentid=21463&stc=1&d=1269233036

[c-ray]

what kind of co2 meters did they have back then?

[will_i_am]

....one more thing I noticed that I did not mention, the buds are not that sticky. In the past, premature or mature never made a difference, my buds have always been super sticky. Now I see many trich, but, the buds are really fluffy, and I can grip a cola without my fingers sticking together....that has never been possible.

...I took all the co2 equipment out of my room, exausted my carbon filter, tossed the sulpher burner...so, I'm back with freash air now. I plan to let them continue to bloom for 2 more weeks before I chop them....

....I wonder if the bud will get their stickyness and normal smell back now?

[will_i_am]

Hydro store guys are generally salesmen, not growers, so take everything they say with a dose of healthy skepticism. Remember they are trying to sell you more crap.

...so true. I didn't do any research my first grow...(stupid I know)...the woman at the hydro store sold me stuff I still haven't used to this day...almost 3 years later. Errrrrr....we live and learn I guess.

[Monseigneur Stroganoff]

....I wonder if the bud will get their stickyness and normal smell back now?

i doubt it, but just wait and see...


and the fluffyness could be temperature or genetic

PS,:whisper: i would try grow something else next grow if it was me... something more dence perhaps? what happened to your trainwreck?

if you want more buds just throw in some more light
energy in=energy out

[will_i_am]

...the Trainwreck is looking better then it ever has, but, again, not as sticky...they smell strong though. I actually do have different strains in veg now. I have, White Berry, NLxBB, NLxSK, AK-47, Pure Power, Blue Cheese, and Afghan Kush. (I'll edit and post pics in a sec.)

...I really don't want to run anymore electric from this location, I have to stick with the 2 x 600whps.....I'm hear'n ya though...I wish I could run waaaaay, waaaaaay more lights...LOL

...any affordable generators you know of?