Welcome the the Pulse forums. Please feel free to share tips, tricks, and experiences on how you’re using Pulse.
Don’t be afraid to start a new topic!
Welcome to the forums everyone!
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This should help all of us that use the Pulse. Thanks for starting a forum.
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Thanks for creating this forum !!!
We love our Pulse’s, couldn’t live without them.
And Peter, thanks so much for being so great with your customer service.
I wish for you guys great success with your product, and I look forward to all additional enhancements to your product.
Keep up the great work !!!
The Farmer
Hey Pete!
Thanks for the Forums! Glad to be here.
Welcome everyone, look forward to sharing!
Rasta…
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Hi Rasta,
Welcome to the forums, looking forward to doing what I can to make Pulse better for you all.
Thanks for the kind works Farmer. Looking forward to doing what I can to make Pulse better for you (and everyone else)!
New topic: Typo in The Ultimate Guide to Dew Point?
Number 5 Calculating dew point… Summary in left column seems backwards. If you drop humility then dew point decreases. Possible rewrite “For each 1.8 degree F above the Dew-Point temperature, the RH decreases by 5%”
In Ultimate Guide to Vapor Pressure Deficit:
How do you Calculate VPD? #2
wrong formula?
VPD = SVP - AVP. its a minus not a times
VPD = Svp - (Svp x RH/100
This comes from: RH = Avp/Svp x 100
RH / 100 = Avp/Svp
Svp x RH / 100 = Avp
Looking forward to your thoughts
Congratulations on launch of Pulse Pro!
George
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Hi Krusty - you should make a new topic for this next time, but the way to check if you have enough light is to take a PPFD reading: Using the Pulse Pro to take an advanced light reading | Pulse Labs Help Center
so far off to a pretty bad start …. I most likely received a faulty unit or its just my device? Samsung s20 ultra 5g… I dont know how the blink up really works besides shooting code in different shades of light but i cant even clear it and it should have Bluetooth but I cant get that to work either……for 500 bucks and not being able to incorporate it into my grow at week 4 of veg is a pretty crucial tie because I wanted to calibrate it as ive read its quite a ways out for everything for the price point definatly feel ripped off at this point bur if this next one works well see…maybe some free merch or something…oh and another annoying thing in the app is i have just push notifications checked yet i receive text and email as well…
Hi @Toneloc696 have you tried calling or using the live chat support widget on our site? We should be able to get you set up.
PM me your email and I can look at what’s going on with your notifications.
Whatsup Grow Family - Glad to be part of the passionate people
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Good to have you on board!!!
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How’s the orp sensor progressing ?
I thought I read on your website that orp sensor was planning on launching in October?
Please share an update!
Thanks Peet!
We’re currently testing and developing firmware for the ORP sensor. I don’t have an exact deadline, but we’re planning on it being ready to ship to customers in Q1
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Hello Peet,
Would love to hear about your take on significance of VPD (Vapor pressure deficit) when it comes to dry rooms. Does VPD play an important part or it is irrelevant ?? How can we utilise VPD for optimal drying times ?
Secondly, what should be the optimal flow (m/s) from the hvacs in optimal drying for cannabis.
I personally recommend that you don’t focus too much on VPD when it comes to drying, because the results from drying have to do with so much more than the volatility of water. The volatility of terpenes, the rate of drying as it relates to “case hardening” (and the likelihood of this happening at different stages of drying) as well as the ability for certain pathogens to thrive all need to be taken into account and may have more to do with very specific temperatures or humidities rather than the VPD you can calculate from them.
There are a few very specific ranges that I dry at, and I do not deviate from them even if the VPD matches. If I could hold my room at a specific VPD within my preferred temp range I probably would, but this is impractical considering the very tight range that drying rooms are held at anyway (typically within a few %/degrees).
That said, I suggest you read this article:
Specifically, take note of this diagram posted there:
You can see that they’ve posted the VPD at different drying conditions, and bracketed acceptable ranges. For instance, the “too dry” was any VPD higher than the 1.2 condition they tested. Too slow was a VPD of 0.4, which kept the bud in a condition which risked mold formation for far too long. The acceptable VPD values tested were 0.6 and 0.8 (conditions of 41F/30% and 59F/55% respectively). I personally recommend values in the region of 0.7-0.9 VPD, while not drying higher than 70F and not drying cooler than 58F. Drying too cold seems to prevent whatever change reduces the hay aroma, and too warm burns off the terpenes.
I personally prefer 62-64F and 58-60% (0.76-0.82vpd), with an optional first 24hrs at a lower vpd such as 64F/55% (0.92vpd), for a consistent 10-12 day dry + ~2 day “cure” (a couple days where the buds are done drying, but you just hold them to make sure all buds are homogenous and don’t change in the bag).