Photos of Wedding Cake and Blue Cheese at 8 Weeks. Should I start to flush/cease co2?

Overgrowtho

Overgrowtho

Well-Known Member
Hi guys, I've got some wedding cake and blue cheese looking great. However at 8 weeks I was expecting them to be a bit more ripe.

Therefore, I am not sure if I should start to flush and cease co2 supplementation now. (I am running 800 PPM for the fertigations and 1000 PPM for co2.)

It is not uncommon in my experience, for these strains to go two more weeks to hit the 10 week mark.

Let me know your thoughts based on the photos and what you might recommend for starting to flush (or not)?

I thought that by this time, I should cut the nutrients to 50% or about 400 PPM and then cut it by another 50% next week, to 200.

Thus I was planning like:
Week 1-8 @ 800 PPM nutrients
Week 9 @ 400 PPM
Week 10 @ 200 PPM
CUT DOWN

Do I also cease Co2 now, for the final 2 weeks? Even while these look far from ripe?

229986127_199473752161546_6075672319693397884_n.jpg

228725377_366876294881043_5950552213833904954_n.jpg
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Overgrowtho said:
Hi guys, I've got some wedding cake and blue cheese looking great. However at 8 weeks I was expecting them to be a bit more ripe.

Therefore, I am not sure if I should start to flush and cease co2 supplementation now. (I am running 800 PPM for the fertigations and 1000 PPM for co2.)

It is not uncommon in my experience, for these strains to go two more weeks to hit the 10 week mark.

Let me know your thoughts based on the photos and what you might recommend for starting to flush (or not)?

I thought that by this time, I should cut the nutrients to 50% or about 400 PPM and then cut it by another 50% next week, to 200.

Thus I was planning like:
Week 1-8 @ 800 PPM nutrients
Week 9 @ 400 PPM
Week 10 @ 200 PPM
CUT DOWN

Do I also cease Co2 now, for the final 2 weeks? Even while these look far from ripe?

View attachment 4961216

View attachment 4961218
Click to expand...
We don't like to hear the "F" word here.
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Overgrowtho said:
Thanks for your advice. 80% hairs should indicate what? About 1 week left? Half a week?
Do you recommend to cut the PPM in half at that stage or down to what level?
Click to expand...
all strain/phenotype dependant but usually 10-14 days then they are ripe for the picking. If
More sativa it can go longer etc

When about 5-10% white hairs I usually reduce feed. 400 sounds about right
 
Star Dog

Star Dog

Well-Known Member
Overgrowtho said:
Please explain? Is my plan fine? (Except move it forward a week since these dont look too ripe?)
What is your "f" routine bro? Why dont you like the "f" word?
Click to expand...
Personally I would flush but only after they're ripe which they look to have a few weeks still to go, I feed them until i consider them ready to cut then give water only for 3/5 days.

I've never used Co2
 
T

toomp

Well-Known Member
Overgrowtho said:
Hi guys, I've got some wedding cake and blue cheese looking great. However at 8 weeks I was expecting them to be a bit more ripe.

Therefore, I am not sure if I should start to flush and cease co2 supplementation now. (I am running 800 PPM for the fertigations and 1000 PPM for co2.)

It is not uncommon in my experience, for these strains to go two more weeks to hit the 10 week mark.

Let me know your thoughts based on the photos and what you might recommend for starting to flush (or not)?

I thought that by this time, I should cut the nutrients to 50% or about 400 PPM and then cut it by another 50% next week, to 200.

Thus I was planning like:
Week 1-8 @ 800 PPM nutrients
Week 9 @ 400 PPM
Week 10 @ 200 PPM
CUT DOWN

Do I also cease Co2 now, for the final 2 weeks? Even while these look far from ripe?

View attachment 4961216

View attachment 4961218
Click to expand...
i like your plan but plan for 3-4 weeks like was said already. I flush but people here consider it more of a leach.
 
voodoosdaddy

voodoosdaddy

Well-Known Member
I wouldn't flush yet because they look like they need to ripen more, but the less co2 the more smell and flavor you'll have. Usually with co2 I like to shut it off for the last 2-4 weeks if I'm going for quality vs quantity.
 
Lordhooha

Lordhooha

Well-Known Member
Overgrowtho said:
Hi guys, I've got some wedding cake and blue cheese looking great. However at 8 weeks I was expecting them to be a bit more ripe.

Therefore, I am not sure if I should start to flush and cease co2 supplementation now. (I am running 800 PPM for the fertigations and 1000 PPM for co2.)

It is not uncommon in my experience, for these strains to go two more weeks to hit the 10 week mark.

Let me know your thoughts based on the photos and what you might recommend for starting to flush (or not)?

I thought that by this time, I should cut the nutrients to 50% or about 400 PPM and then cut it by another 50% next week, to 200.

Thus I was planning like:
Week 1-8 @ 800 PPM nutrients
Week 9 @ 400 PPM
Week 10 @ 200 PPM
CUT DOWN

Do I also cease Co2 now, for the final 2 weeks? Even while these look far from ripe?

View attachment 4961216

View attachment 4961218
Click to expand...
You’ve got at least a month before thinking about even possibly chopping. Keep feeding no need to flush pointless and counter productive. For co2 I generally shut it off once all the pistils turn and recede in for the most part and start prepping the drying room for the next week when I go to chop them down.
 
Southernontariogrower

Southernontariogrower

Well-Known Member
I always thought that the bigger the plant gets the more feed it needs. But l guess we do want them to cannabolize themselves. I just gave my idea of full feed over a month in, might just have to start to bring back down now after this thread, nice plants btw.
 
Overgrowtho

Overgrowtho

Well-Known Member
Interesting that @Lordhooha only shuts off Co2 in the last week. I've heard that the last 2 weeks are good to shutoff from, I think it was Ed Rosenthal? But the reason for doing that as highlighted:
voodoosdaddy said:
the less co2 the more smell and flavor you'll have. Usually with co2 I like to shut it off for the last 2-4 weeks if I'm going for quality vs quantity.
Click to expand...
This is something interesting to consider! What a difficult tradeoff to decide on.... there must be a middle ground e.g. I think Ed Rosenthal recommends shutting of Co2 in the last 2 weeks. I've also heard about co2 effecting the smell. I wonder how that works scientifically whereby the higher co2 works against the terpenes?

I did some reading and this is what I found from THC farmer forum:
​
1​
In my experience running elevated levels of Co2 late in flower delays proper ripening and maturation​
It’s important that CO2 levels are lowered to ambient levels during the ripening phase (for example, 400-600). If CO2 levels remain higher at this stage, the buds may get bigger, but they’ll lack the density and intense flavors and colors that we typically desire. This is because carbon dioxide inhibits the plant’s production of ethylene, a naturally occurring hormone that assists in the ripening process.​
​
2​
Definitely cut the CO2 and bring the temps as low as you can during the last 2 weeks. Makes for a nice frost and density. Night time temps around 60 will make for some nice colors as the plants eat up their leaves and flush in plain RO water​
​
Also bring the room humidity as low as possible in these last 2 weeks.. Extra resin is produced for the plant to deal with the dry air​
www.thcfarmer.com

Running CO2 until Final Harvest Day

I understand how and why to use CO2 from a scientific/biological standpoint, and I'm happy with the success I've had with it. I grow OG only. What I'm wondering is this: If I run my CO2 at 1,000ppm from Day 1 of Flower until the very minute I harvest my crop (appx. 63 days), at which point...
www.thcfarmer.com www.thcfarmer.com
​
​
It sounds like I'm facing slow ripening, fattening and possibly less ripe terpenes/THC with CO2 kept at 800-1200 for too long.

So I will taper this and temps and feed (TAPERING FEED, NOT FLUSHING -- sorry and thanks) gradually over the final few weeks.

Finding a balance until I come down to 400-600 PPM CO2 and 200 PPM feed and maybe 60 degrees/50 RH.

My last run had beautiful foxtails which I liked and added a lot of weight so I wont do this tapering too quick. However my terpenes have room left for improvement so I will aim to avoid doing this too slow as well.
​
​
​
​
 
Lordhooha

Lordhooha

Well-Known Member
Overgrowtho said:
Interesting that @Lordhooha only shuts off Co2 in the last week. I've heard that the last 2 weeks are good to shutoff from, I think it was Ed Rosenthal? But the reason for doing that as highlighted:

This is something interesting to consider! What a difficult tradeoff to decide on.... there must be a middle ground e.g. I think Ed Rosenthal recommends shutting of Co2 in the last 2 weeks. I've also heard about co2 effecting the smell. I wonder how that works scientifically whereby the higher co2 works against the terpenes?

I did some reading and this is what I found from THC farmer forum:
​
1​
In my experience running elevated levels of Co2 late in flower delays proper ripening and maturation​
It’s important that CO2 levels are lowered to ambient levels during the ripening phase (for example, 400-600). If CO2 levels remain higher at this stage, the buds may get bigger, but they’ll lack the density and intense flavors and colors that we typically desire. This is because carbon dioxide inhibits the plant’s production of ethylene, a naturally occurring hormone that assists in the ripening process.​
​
2​
Definitely cut the CO2 and bring the temps as low as you can during the last 2 weeks. Makes for a nice frost and density. Night time temps around 60 will make for some nice colors as the plants eat up their leaves and flush in plain RO water​
​
Also bring the room humidity as low as possible in these last 2 weeks.. Extra resin is produced for the plant to deal with the dry air​
www.thcfarmer.com

Running CO2 until Final Harvest Day

I understand how and why to use CO2 from a scientific/biological standpoint, and I'm happy with the success I've had with it. I grow OG only. What I'm wondering is this: If I run my CO2 at 1,000ppm from Day 1 of Flower until the very minute I harvest my crop (appx. 63 days), at which point...
www.thcfarmer.com www.thcfarmer.com
​
​
It sounds like I'm facing slow ripening, fattening and possibly less ripe terpenes/THC with CO2 kept at 800-1200 for too long.

So I will taper this and temps and feed (TAPERING FEED, NOT FLUSHING -- sorry and thanks) gradually over the final few weeks.

Finding a balance until I come down to 400-600 PPM CO2 and 200 PPM feed and maybe 60 degrees/50 RH.

My last run had beautiful foxtails which I liked and added a lot of weight so I wont do this tapering too quick. However my terpenes have room left for improvement so I will aim to avoid doing this too slow as well.
​
​
​
​
Click to expand...
I only do to save on propane and the co2 levels in the room stay elevated in the 5-600 ppm range anyways. The rooms themselves stay 77-78 degrees and the rh I drive down to 40-35% the final two weeks. Doing all this my testing comes back (strain dependent) anywhere from 3.8 - 6% or more.
 
PopAndSonGrows

PopAndSonGrows

Well-Known Member
Ppl get butthurt about the word "flush" but still call weed by "strains" instead of cultivars, and refer to "brown pistils" instead of stigmas :neutral: . Tomato tomahto.

Just do your thing. Personally, I only do a 3-day flush in coco moreso for "peace of mind", i consider it proper etiquette like washing my hands after I pee, i mean, I didn't piss on my hands, my dick ain't dirty but I still wash my hands.
 
voodoosdaddy

voodoosdaddy

Well-Known Member
When I grew commercially I'd run co2 the whole time. My temps would go up to 100 or more during the day and 85-90% humidity. I never flushed and got great yields. My guru used the same method and got 3.75lbs per 1k watts in a 4x4 area. It was super powerful bud.
For my personal stash I used to grow without co2. At night my temps were allowed to get as low as 60 and no higher than 75 or 80 during the day. The buds were always way denser, WAAAAYYYYYY stinkier and tasty, and about as potent. The yield was way lower though.
Every once in a while when growing commercially I'd cut the co2 the last couple of weeks to get a tastier product since I was smoking it... The last 2 weeks without co2 did effect the yield a little vs running it the whole time. But when you're growing for $$$ every gram counts.
 
Overgrowtho

Overgrowtho

Well-Known Member
voodoosdaddy said:
....The last 2 weeks without co2 did effect the yield a little vs running it the whole time. But when you're growing for $$$ every gram counts.
Click to expand...
In your estimation how much yield does Co2 add like 30% is accurate?
Does cutting it off in the last two weeks only add 25% then for example? But give much stinkier buds?
 
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