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

[Lordhooha]

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?

Really I always equate co2 to steroids. If everything is perfect in the grow, your temps, lighting, dehumidifiers etc are all dialed in then just like bodybuilding it'll only help push past that genetic limit. Now say you have issues in the grow and shit is all wonky then it'll only cause issues like when you eat like shit on cycle you'll gain more body fat then you should.

Now @PopAndSonGrows yes the stigma/ pistil are two different parts but 99% of people know the hairs as such I went to school for this stuff for myself not to teach other the anatomy of a plant it's just easier imo. As far as strains vs cultivar stuff go the word means the same to me everyone want a fancy sounding name like custodial manager. Dude your a janitor period lol. Flushing is just one of those things that ppl can't seem to get away from but nevertheless it's just as pointless. Just water your plant with plain old water that last 3 days. No need for anything crazy like 5 gallons of water through a 1 gallon pot. Not saying that's you but science just doesn't support it.

 

[PadawanWarrior]

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?

Just saying don't flush. Your plan sounds fine though.

 

[Overgrowtho]

Summary of this thread:

-Find a balance of yield/nose regarding co2 in the last weeks, or adjust based on your priority.
-Taper to an ideal ripening, the last weeks of life for: CO2, food and temperatures levels.

Sound about right?

 

[toomp]

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?

if you have a sealed room I wouldnt cut co2

 

[Overgrowtho]

if you have a sealed room I wouldnt cut co2

At I will push it down to 500-600 PPM for the last 2 weeks, not cut completely in the sealed room.

 

[Star Dog]

Flushing plants before they are ripe makes no sense to me whatsoever, flushing for 3-4 days once ripe absolutely 100% makes sense to me.

With 4 days of water 0.0 e.c
Before the 4 days water 0.6ec, the individual can feel free to smoke nutrient residue...or not?

 

[voodoosdaddy]

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?

It varies by variety, but yeah 30% pretty easily. My skunk #1 bulked up mostly at the end of flowering so cutting it off the last 2 weeks really affected the final numbers. My Blueberry would bulk up the last month but seemed to bud more evenly throughout the budding cycle so I don't think it's yield was affected as much. But yeah much stinkier buds.

 

[Southernontariogrower]

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:

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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.​

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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​

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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​

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

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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.

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Might be they need more to get bigger not less?