I'm asking for your data logs of your growbox/growroom controllers
- Thread starter pahval
- Start date
solakani
Well-Known Member
I want to use my dht22 logs to find what was the optimal rhSet for the entire 100 day grow. I need the vpdSet on veg, flower stage and the 2 temperature set-points, one for day (lights on) and one for night (lights off)...
your rhSet formula for 25C and 1.61 vpd result is 62.5 % Correct?
your rhSet formula for 25C and 1.61 vpd result is 62.5 % Correct?
pahval
Well-Known Member
hey, sorry i was silent, crazy week, i only eat, work and sleep and read other forums about some advanced techinques... no, it should not give this results, i calculated RH via Javascript console on my browser, and it says RH at temps of 25 C and vpdSet of 1.61 is 49.19... i cant use my esp32 at the moment, it seems my drivers for usb on my laptop went crazy and i cant upload any sketch to arduino or esp32... ill try to make my old computer work for the weekend... but i did find error in my formula, which i corrected...1.61 VPD is too much, your plants will transpire (drink and breathe out) more water than usual, which may make them intake too much nutrients, and may lead to nutrient burn... VPD changes from stage to stage, check the charts (if they are hard to read for you, you can download this one: https://github.com/plant-og/vpd and open index.html and choose stage of plant you want), and find your values... you can take lets say 26C and 22C for day/night temperatures, check the charts for RH (for veg its 65% - 70%), and hardcode those 4 values in your arduino for controlling your devices depending on what part of day it is for plants (lights on means day, lights off means night...
solakani
Well-Known Member
You used leafTemp = airTemp in your formula. If I set the vpdSet according to stage and use the time to determine day/ night then I can rerun rhSet for all my grows.
2020-09-01 03:17:39 INFO Temp=25.1*C Humidity=58.8% 54.5%=rhSet SVP hPa leaf=3.19 SVP hPa air=3.19 vpdSet=1.45
2020-09-01 03:19:37 INFO Temp=24.8*C Humidity=59.9% 53.7%=rhSet SVP hPa leaf=3.13 SVP hPa air=3.13 vpdSet=1.45
2020-09-01 03:22:33 INFO Temp=24.5*C Humidity=61.0% 52.9%=rhSet SVP hPa leaf=3.08 SVP hPa air=3.08 vpdSet=1.45
2020-09-01 03:26:30 INFO Temp=24.3*C Humidity=62.1% 52.3%=rhSet SVP hPa leaf=3.04 SVP hPa air=3.04 vpdSet=1.45
2020-09-01 03:26:57 INFO Temp=24.2*C Humidity=62.0% 52.0%=rhSet SVP hPa leaf=3.02 SVP hPa air=3.02 vpdSet=1.45
2020-09-01 03:35:30 INFO Temp=24.0*C Humidity=63.2% 51.4%=rhSet SVP hPa leaf=2.98 SVP hPa air=2.98 vpdSet=1.45
2020-09-01 03:50:22 INFO Temp=23.7*C Humidity=64.3% 50.5%=rhSet SVP hPa leaf=2.93 SVP hPa air=2.93 vpdSet=1.45
2020-09-01 04:22:45 INFO Temp=23.4*C Humidity=65.4% 49.6%=rhSet SVP hPa leaf=2.88 SVP hPa air=2.88 vpdSet=1.45
2020-09-01 05:04:17 INFO Temp=23.1*C Humidity=65.9% 48.7%=rhSet SVP hPa leaf=2.83 SVP hPa air=2.83 vpdSet=1.45
2020-09-01 05:54:42 INFO Temp=23.0*C Humidity=66.5% 48.4%=rhSet SVP hPa leaf=2.81 SVP hPa air=2.81 vpdSet=1.45
2020-09-01 08:18:23 INFO Temp=22.7*C Humidity=67.6% 47.4%=rhSet SVP hPa leaf=2.76 SVP hPa air=2.76 vpdSet=1.45
2020-09-01 09:05:36 INFO Temp=23.0*C Humidity=66.5% 48.4%=rhSet SVP hPa leaf=2.81 SVP hPa air=2.81 vpdSet=1.45
2020-09-01 09:11:16 INFO Temp=23.3*C Humidity=65.4% 49.3%=rhSet SVP hPa leaf=2.86 SVP hPa air=2.86 vpdSet=1.45
2020-09-01 09:12:27 INFO Temp=23.6*C Humidity=64.3% 50.2%=rhSet SVP hPa leaf=2.91 SVP hPa air=2.91 vpdSet=1.45
2020-09-01 09:13:41 INFO Temp=23.8*C Humidity=63.3% 50.8%=rhSet SVP hPa leaf=2.95 SVP hPa air=2.95 vpdSet=1.45
2020-09-01 09:15:28 INFO Temp=24.0*C Humidity=62.2% 51.4%=rhSet SVP hPa leaf=2.98 SVP hPa air=2.98 vpdSet=1.45
2020-09-01 09:16:31 INFO Temp=24.2*C Humidity=61.9% 52.0%=rhSet SVP hPa leaf=3.02 SVP hPa air=3.02 vpdSet=1.45
2020-09-01 09:18:25 INFO Temp=24.2*C Humidity=61.1% 52.0%=rhSet SVP hPa leaf=3.02 SVP hPa air=3.02 vpdSet=1.45
2020-09-01 09:26:19 INFO Temp=24.6*C Humidity=60.0% 53.1%=rhSet SVP hPa leaf=3.09 SVP hPa air=3.09 vpdSet=1.45
2020-09-01 09:44:53 INFO Temp=24.9*C Humidity=58.9% 54.0%=rhSet SVP hPa leaf=3.15 SVP hPa air=3.15 vpdSet=1.45
2020-09-01 10:24:32 INFO Temp=25.3*C Humidity=58.2% 53.1%=rhSet SVP hPa leaf=3.23 SVP hPa air=3.23 vpdSet=1.512
2020-09-01 10:33:10 INFO Temp=25.3*C Humidity=57.8% 53.1%=rhSet SVP hPa leaf=3.23 SVP hPa air=3.23 vpdSet=1.512
2020-09-01 11:19:03 INFO Temp=25.6*C Humidity=56.7% 54.0%=rhSet SVP hPa leaf=3.28 SVP hPa air=3.28 vpdSet=1.512
2020-09-01 11:43:54 INFO Temp=25.5*C Humidity=57.8% 53.7%=rhSet SVP hPa leaf=3.26 SVP hPa air=3.26 vpdSet=1.512
2020-09-01 12:44:31 INFO Temp=25.8*C Humidity=56.7% 54.5%=rhSet SVP hPa leaf=3.32 SVP hPa air=3.32 vpdSet=1.512
2020-09-01 14:36:17 INFO Temp=26.4*C Humidity=56.3% 56.1%=rhSet SVP hPa leaf=3.44 SVP hPa air=3.44 vpdSet=1.512
2020-09-01 15:15:13 INFO Temp=26.4*C Humidity=55.6% 56.1%=rhSet SVP hPa leaf=3.44 SVP hPa air=3.44 vpdSet=1.512
2020-09-01 15:26:44 INFO Temp=26.3*C Humidity=56.7% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:36:13 INFO Temp=26.3*C Humidity=76.9% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:36:19 INFO Temp=26.3*C Humidity=56.3% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:46:57 INFO Temp=26.3*C Humidity=58.0% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:47:08 INFO Temp=26.3*C Humidity=56.4% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:49:12 INFO Temp=26.3*C Humidity=57.9% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:49:17 INFO Temp=26.4*C Humidity=60.9% 56.1%=rhSet SVP hPa leaf=3.44 SVP hPa air=3.44 vpdSet=1.512
2020-09-01 15:49:41 INFO Temp=27.2*C Humidity=58.6% 58.1%=rhSet SVP hPa leaf=3.61 SVP hPa air=3.61 vpdSet=1.512
2020-09-01 15:49:51 INFO Temp=26.3*C Humidity=56.7% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 15:51:49 INFO Temp=26.4*C Humidity=58.2% 56.1%=rhSet SVP hPa leaf=3.44 SVP hPa air=3.44 vpdSet=1.512
2020-09-01 15:51:54 INFO Temp=26.4*C Humidity=59.6% 56.1%=rhSet SVP hPa leaf=3.44 SVP hPa air=3.44 vpdSet=1.512
2020-09-01 15:52:05 INFO Temp=26.3*C Humidity=56.5% 55.8%=rhSet SVP hPa leaf=3.42 SVP hPa air=3.42 vpdSet=1.512
2020-09-01 16:27:57 INFO Temp=26.4*C Humidity=56.9% 56.1%=rhSet SVP hPa leaf=3.44 SVP hPa air=3.44 vpdSet=1.512
2020-09-01 23:56:59 INFO Temp=25.8*C Humidity=46.9% 54.5%=rhSet SVP hPa leaf=3.32 SVP hPa air=3.32 vpdSet=1.512
solakani
Well-Known Member
Thank you. My plants thank you. This made me realize how far off my environment was. Just some small tweaks with fan and humidifier gave amazing results in one month.
GrOwThMoNgeR
Well-Known Member
Cool project @Pahvel are you a grower?
pahval
Well-Known Member
Was, will be... Designing my machine rn for med users so they can grow easier... Also studying what science says about light, nutrients, decarb/extraction of cannabis and some other supplements for cancer cure... Wont touch weed cause my psyche, not for some time... What do you think about automation in your grow? Do you see it as something that can help or take away time? Would you implement whole system like nute mixing, light schedules, temp/hum control if it was cheap and reliable?
What? I have no idea what this means. Did you have 2 out of 5 plants die and ended up with 30 grams per plant.
pahval
Well-Known Member
No, i grew for my dear friend who suffered from metastasys comeback and at the time of last 2 grows, i was on college for 6 hours, working 8, and 2-4 hours with her, that grow i couldnt even take that much care of grow, and also to be honest we both knew it wouldnt matter, i was so exausted i forgot on plants for a week and they all withered in i think week 2 of flower, most of times i would feed her, wash her, etc. so that 30 grams was from forgetting watering for a week, no temp control, no effort, i eyeballed 30 grams, it could have been more it could have been less, last one i killed because she died in the middle of it, and i had to clear any evidence (illegal where im from)...
pahval
Well-Known Member
Actually, they were dry for about 10 days as far as i remember, i just saw them, cut them and threw in alcohol... New plants had just sprouted and i put them where the failed grow was, and i think 5 days later she died in hospital, i had to be forced out of room, almpst beat the shot out of nurse guy...
pahval
Well-Known Member
No, dht22 are the least reliable ones i have used... They show big offsets, have slow reading time, good for casual room monitoring, not for grow... Check out sht35 sensor, it proved to be the best so far...
pahval
Well-Known Member
Atlas
I somehow didnt read your ladt sentence... Atlas scientific is i think very good also, they have a good reputation, but ive never used them...
kannedpharts
New Member
temperature in soil plays a role. albeit something you don't really need to worry about.from what i have researched, temperature in soil is not important, and in my experience and from what i have heard you water every 2-3 days, but you have good... i suggest you check out this site:
The Ultimate Vapor Pressure Deficit (VPD) Guide
"Why devote an entire guide to VPD?" you might ask. The answer is that the vapor pressure deficit (VPD) is extremely important for growing plants. VPD helps you identify the correct range of temperature and humidity to aim for in your grow space. With VPD you can achieve the best results while...pulsegrow.com
and see this:
it explains why certain ratio of temperature and humidity is important. If you run soil only, you can have simple automation of ventilation and dehumidifier, and if you put RTC (clock) you can automate your lights also...
some nutrients absorb better than others in higher or lower temp ranges.
fortunately, these ranges are all around like 12-25 C. which is pretty much what your plant wants (and gets with your light cycle.)
this is why growers will say dont put buckets on a cold basement floor because it gets to cold - the plants stop absorbing nutrients.
ive tried researching the optimum temp ranges, and honestly, its a headache and a half. because PH also plays a role and average plant sees the whole spectrum through the grow. but point being, its good to hit temp highs and lows for this reason. optimal nutrient uptake
guitarguy10
Well-Known Member
This guys automated hydro build:
kylegabriel.com
and the Mycodo software he's written for it:
kizniche.github.io
Might give you some good data, or at least a good web interface you don't have to write yourself.
Automated Hydroponic System Build – Projects | Kyle Gabriel
kylegabriel.com
and the Mycodo software he's written for it:
Mycodo
Documentation for Mycodo, an open source environmental monitoring and regulation system.
kizniche.github.io
Might give you some good data, or at least a good web interface you don't have to write yourself.