Gotcha. I have attached csv export, maybe this will have distribution info you can see.
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Drying and Curing using vpd
- Thread starter g4sho
- Start date
Were you able to open the zip file I posted for you with all the data including distribution?Looks great so far.
Yes, but its "only" one Messure Point per Day. You can Change it before export under "Frequency". 
I personal collect my (Grow) Data in 3 screenshots per Week . I will do the same for the Drying too but by Day. Sadly i have to wait a couple Weeks more im at Day 43/80?! of my Grow. By the way You can change the shown period in the AC App by zoom in and out.
I personal collect my (Grow) Data in 3 screenshots per Week . I will do the same for the Drying too but by Day. Sadly i have to wait a couple Weeks more im at Day 43/80?! of my Grow. By the way You can change the shown period in the AC App by zoom in and out.
That is your CSV
Device ID,Koolatron,
Export Time,"""06/30/2024 23:26:03""",
Sample Frequency,24 HRS,
Start Time,"""06/26/2024 00:00:33""",
End Time,"""06/30/2024 23:22:33""",
Temperature Units, F,
Leaf Temperature Offset,0,
Time,Temperature F,Relative Humidity,VPD,
06/27/2024 00:00:00,65.59,73.78,0.55,
06/28/2024 00:00:00,65.37,65.01,0.71,
06/29/2024 00:00:00,64.99,61.37,0.80,
06/30/2024 00:00:00,65.88,58.18,0.86,
Device ID,Koolatron,
Export Time,"""06/30/2024 23:26:03""",
Sample Frequency,24 HRS,
Start Time,"""06/26/2024 00:00:33""",
End Time,"""06/30/2024 23:22:33""",
Temperature Units, F,
Leaf Temperature Offset,0,
Time,Temperature F,Relative Humidity,VPD,
06/27/2024 00:00:00,65.59,73.78,0.55,
06/28/2024 00:00:00,65.37,65.01,0.71,
06/29/2024 00:00:00,64.99,61.37,0.80,
06/30/2024 00:00:00,65.88,58.18,0.86,
DAY 6
Everything is on schedule. Bagged up the rest of last weeks dry and put into grove bags to cure in Koolatron. Have a few buds still reading in the 14 range on the moisture meter, and some that are within good window. By day 8 everything will be ready for grove bags. I think I will be experimenting with curing half in grove bags and half in the Koolatron itself on the racks, to see if there are differences with final product.
Everything is on schedule. Bagged up the rest of last weeks dry and put into grove bags to cure in Koolatron. Have a few buds still reading in the 14 range on the moisture meter, and some that are within good window. By day 8 everything will be ready for grove bags. I think I will be experimenting with curing half in grove bags and half in the Koolatron itself on the racks, to see if there are differences with final product.
Attachments
DAY 7
All buds are in the correct moisture window for the next step which will be curing. We will transition to curing state starting tomorrow, Day8. We will start by lowering the vpd to either point 6 or 7 which will raise the humidity a tad we want to get to between 62 and 64 and hold it. In vpd terms that is about .76kpa, a dew point of 53.
All buds are in the correct moisture window for the next step which will be curing. We will transition to curing state starting tomorrow, Day8. We will start by lowering the vpd to either point 6 or 7 which will raise the humidity a tad we want to get to between 62 and 64 and hold it. In vpd terms that is about .76kpa, a dew point of 53.
Attachments
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I took the liberty of sampling some of the product, by both joint and mighty vape. No hay taste, burns good, stays lit, white grayish ash. The high is uplifting at the same time can put you in an extremely relaxed state, body wise. Does not have much smell until you break open the bud or grind. Very good buzz.
DAY 8
Well we are at the end of the drying period. Everything is within the moisture meter good window. We will start our cure with some flower curing in the Koolatron, some curing in Mason Jars, and some curing in Grove bags. All will be in the same environmental conditions otherwise. I just want to see if there is a noticeable difference. I am shooting for 4 week cure. I have set the vpd to .7kpa will monitor and make adjustments if needed.
Well we are at the end of the drying period. Everything is within the moisture meter good window. We will start our cure with some flower curing in the Koolatron, some curing in Mason Jars, and some curing in Grove bags. All will be in the same environmental conditions otherwise. I just want to see if there is a noticeable difference. I am shooting for 4 week cure. I have set the vpd to .7kpa will monitor and make adjustments if needed.
Attachments
Just some information I found in reference to the $1600 machine we are trying to emulate. Seems vpd is indeed the tool that unit is controlling also, the same as we are doing here.
terpenesandtesting.com
How Cool is Your Cure? - Terpenes and Testing Magazine
Cannatrol Helps Cultivators Establish Command Over The Dry Cure Process When you walk through a field of something like wildflowers, or desert sage, or cannabis, unless you’re lacking in olfaction, you can’t help but notice and inhale the honeyed fragrances wafting into your nose. While this is...
NutterDeep
New Member
So are you adjusting the VPD as you go each day or is it a set and forget?
Set and forget. But there is nothing to stop you from sloping it down over a period of time. I just don't think it is necessary as it will cycle between .7 and .8kpa with the vpd set at .7kpa setting for cure. Temp should be always lower than 69 I prefer 64 to 66F.
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raggyb
Well-Known Member
Cool stuff you are doing g4. What is the reason your goal is 9 days? Why not more or fewer days?
Thank you, just trying to get better like everyone else. 8 to 10 days based off of the studies done by the Dr. studying this subject of drying and curing for the industry. It's in one of the comments on page 1 I believe. Also is the chart that they created based off they're experiments. .8kpa between 8-10 days to dry product down to between 58 and 62 percent RH. Or 8 to 12 water activity with a moisture meter. Temp range should be 60 or above not to exceed 69F(I prefer 64 to 66F). And then the cure from there. My understanding is this is what they found to be optimum, for the amount of time to get an even dry, maintain more terpenes, and to protect against bud rot, and mold. And it worked out well for my first harvest using this method, with the Koolatron, AC Infinity controller, and dehumidifier.
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raggyb
Well-Known Member
You're making me think that even if I can't afford to get my drying temps down below 66F (edit) I should be trying to increase my atmosphere's rH above 60% to target a vpd of .8kpa instead of targeting 60% rH. It would seem I would probably need to increase my atmosphere's rH whereas what you are doing is lowering your rH because yours are in a wine cooler. I'd still lose terpenes but maybe minimize their losses and maximize chlorophyll losses if the dry completes in 9 days in other words not too slow not too fast. I take it you keep the door shut and don't swap in O2 in while you are drying? Is that right?