SWAG allows user to input RANDOM numbers to get good looking VPD, as I can only guess at leaf temps. I know from the laser-gun, they are 7-12 degrees different from the temp thermometers at same height. At least Temp and RH can match a standard. Awaiting arrival of another device to calibrate GOVEE temp/RH unit (standard for ACIC probe). Exhaust fan set on AUTO with MAX setting position #4 and OFF setting #1. Intake set AUTO with 4 max and Zero for OFF. Outside temps too cool, so I will open the veg tent and draw less from outside. Still learning. Later.
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I switched the spectrum over to preflower 90% and raised the light and its putting 30-32 DLI on the little plants and 38-41 DLI (23hr) .
NOW my leaf temperatures are only 2* higher than airtemps under the canopy instead of 4 .
moved a humidifier in there to try again to get a decent vpd so far the best i can get is 1.61 kPal. WAIT A MINUTE…THIS JUST IN …A NEW RECORD LOW VPD @1.58…ONLY .48 TO GO…I need to build humidity but keep the fans on high and you cant suck heat out w/o removing the humidity also.
They do look very appreciative but 2-7 has me concerned with some yellowing.We’ve been watering to run off quite a bit trying to undo some earlier evil and some of the feedings are yielding results that area bit unexpected.
2-7 had a previous run off of 6.3/ .77/ 385.(PH/EC/PPM) in a 5 gallon pot of Ocean Forest.
I fed it a gallon of Flower Time fertilizer @ 6.1/ 2.3 /1150 to runoff of course and that came out @ 6.4 / .05 / 25 .Ridiculously Low. Inert really. I thought I should have wound up with roughly 6.2/1.53 /765.
Ha, just when you think you’re doing ok and now 2-7 has some yellowing and increased spotting.
The only thing i did differently was adjust ph down with vinegar and not lemon juice or ph down solution.
Forum posting previously explained difference between vinegar and PH down.
I use PH down, now, only. Don’t know if there is a difference, but it is made for this purpose, so go figure.
OBTW- Officially I am now a proud parent of two clones (MINE 100%, cultivated on site, from last month, March or early April).
A different forum posting mentioned wet towel in grow tent to provide moisture (maybe, also reduce temperature).
ACIControllers 82.5-degrees, 47% RH, and whatever VPD leaf offset I chose (makes VPD look good).
Definite range of leaf temps, fans working at minimum.
Exhaust selected #1, Intake OFF/Zero. Ambient temps 60-degrees.
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yes ,i read that also ,but where?
lol.
its all lights ,plants, fans, and dehumidifier,humidifier…oh my.
what do you make of this?
Not sure. In my grow, I spill when watering and I am prone to overwatering.
Playing with ACIC Mode CYCLE for some time. I went to 18 hrs light so I can see some growth.
Excited to have one lone survivor, let alone 2 clones and a forest to thin.
Today, I placed a cut gallon jug, filled with water, in the tent. Tonight, I suspended a towel and dipped it into the water, hung with rope positioner (so wicking will occur) and placed partially into the jug-water. Both are place near the tent INTAKE. SWAMP COOLER TECHNOLOGY? I will report to you how fast the jug emptied. Laser temp on the wet towel was 60-degrees, same as intake air blowing on/into tent.
Humidity and Cooling? A two-fer, winner winner (CD).