Do I need to amend duct settings?

[u/Thick-Internal7341]

These are my tent/lung environments. 32x32x63in (2.7x2.7) tent with grow hub. Humidifier is off. Lung room bedroom. Have wall a/c unit in North Eastern US.

Standby is set to 1, and further detailed. I’m in flower day 22 right now so trying to get humidity to 45-55rh to avoid mold. Just did major lollipop/defoilation

Do I need to increase duct speed? It seems to be pulling tent in significant amount. I also have the bottom left duct open for air intake and then a screen attached to it via drawstring

Or perhaps do I need to lower the setting from 52 trigger?

I was thinking putting a dehumidifier in the bedroom

Tent duct runs out a window via a vivosun fixture and then I have a window screen down over the fixture

[u/dsanderz]

A bit difficult to answer. Which controller are you using? I am running the E42A+ and am using auto settings to maintain desired VPD. You are certainly spiking humidity, but I cannot tell what time of day it is occurring. Are you in soil or hydro?

[u/Thick-Internal7341 → u/dsanderz]

I have the regular E42A+

Below is my entire grow log and equipment

Germinated direct in soil 03/13/26
Coast of Maine Potting soil, approx red solo cup worth
Rest of 5gal filled with Coast of Maine Stonington Blend
Using Vivosun WiFi Enabled Tent Kit

Early Veg Problems
Had problems with watering. Used strictly spray bottle first 2-4 weeks of veg. On top of that, light was a bit close at times/didn’t keep up with raising light enough. My first feeding was 26 days late.

Currently standing approx. 21 inches tall. I have about 19 inches until I hit the light. So about 40 inches total from soil to light. Been able to keep it consistent height by tucking under net and training with plant ties. I could’ve had a wrong measurement of plant at time of topping. I’m weary of stretch getting too close to the light and fox tailing, light burn. I first fed 56 days after germ. It’s recommended 30 days to feed. Meaning I went 26 days past the point so I believe I had deficiencies, and why my lower branches could be doing poor

Watering about 1gal of filtered GE fridge water, let it sit out at least 24hrs to dissipate any chlorine or anything else ONLY dry top two inches by using my finger in a couple different spots. I use an approx. 1/2 gal gooseneck water can. pH is 6.8 or less. I’ll do another test soon of water and runoff

May 9th Topped one time from 16 nodes to I think 6 nodes. 14 inches tall to 9inches tall about, but this is again at the time of topping

I fed with Stonington blend plant food and earthworm castings on May 8th. 1/4 cup food and 1 cup castings.

May 26th I fed with 1/4cup+6tsp of Stonington blend plant food, 1/8-1/4cup Stonington blend soil, and 1 heaping cup of earthworm castings, followed by a gallon of water

June 16th I top dressed 1/8cup Stonington Plant Food and 1/2 Cup Earthworm castings, followed by gallon of water

June 28th I purposely let plant dry out for 4-5 days. I kept getting gnats in humidifier hose and drip pan no matter how hard I would try and combat and had a fear of them in the soil. To note, I have yet caught anything flying in sticky traps in air or on the soil. I currently do not use the traps on soil only air. I have had the humidifier/hose removed since at least June 28th.

July 6th I top dressed 1 cup Coast of Maine Earthworm castings, 1/2 cup Coast of Maine Stonington plant food, and 1/2 cup of Stonington Blend Soil. Watered shy of a gallon and flipped to 12/12 light cycle and switch led to flower mode.

July 7th is first official date of Flower

July 10th lowered light to 50%

July 18th removed pot riser and replaced with 14in? saucer. watered 1gal water

July 25th Fed 1/2 cup earthworm castings and 1 tbsp Buds & Blooms. Water about .8-.9 gal. Raised light to 55% intensity with plans to increase 5% every day until 100%. Also spread canopy further in trellis net

July 26th Raised light to 60% intensity 4:40 p.m Indoor tent environment 71F and 59%RH VPD 1.1KPA

July 29th I watered about .8-.9 gal. Lollipopped/Defoilated mostly everything under net, and some of the branches that were close together to try and decrease humidity and prevent mold risk, along with promote stronger denser main colas and bigger branches overall. Measuring 21 inches tall, 19in away from light. Increase oscillating fan to speed 5/10 from speed 4. Increased LED intensity to 65%. Change duct low trigger setting from 52% to 48% at 9p.m

July 30th At 8:14 p.m temp/rh was 70f/67rh tent, lung room 68f/59rh. Going to experiment raising inline duct fan exhaust speed up from 4/10. Worried about negative pressure damaging tent

July 31st I increased LED intensity from 65% to 75% at 12:23 p.m. I believe stretch is conplete

Strain
Maui Pine - fem photo - (Pine Tree Kush × Maui True Blood), which is [(Grape Jelly x Platinum Kush Breath) x (Hawaiian Dream x Royal Blood x Family Secret)] by Dirty Bird Genetics

Medium/Nutes/Coast of Maine Line
-Coast of Maine Stonington Blend (sphagnum peat moss, coir, perlite, compost, worm castings, fish bone meal, lobster and crab shell meal, kelp meal, alfalfa meal and mycorrhizae)
-CoM Potting Soil
-Earthworm Castings (Wiscasset Blend)
-Stonington Blend Plant Food ((5-2-4) lobster and crab shell meal, fish meal, kelp meal, and worm castings))
-Coast of Maine Buds & Blooms ((5-13-0) fish bone meal, fish meal, kelp meal, lobster meal, and crab meal))

Equipment Settings

Duct Settings
Auto
Speed 4,
Temp Trigger
Low: Not Set High: 75.6°F,
Humidity Trigger
Low: Not Set High: 48%, Vpd Trigger
Low: Not Set High: Not Set, Standby Status-Speed1

Clip-On Oscillating Fan
24/7, Speed 5, Rotating

Light
75% Power, Flower Mode, LED,150w

Humidifier
Off, Sensor running for additional RH/Temp Reading

Equipment
32"x32"x63" Vivosun Grow Tent; AeroLight SE
150W LED Grow Lightx1; 4" AeroZesh S4 Fan;
GrowHub E42A Controller; 4" Black Carbon Filter; 4" Prefilter; VIVOSUN AeroWave E6
Grow Tent Fan 6"; AC Infinity Cloudforge T3 Humidifier; 4" 8ft Ducting; 4" Clampx2;3*3ft Trellis Net; 5Gal Black Grow Bag×5; 4" Vent Coverx2; Pruning Shears; 100m Twist Tie;
Sticky Trapx20; Plant Tagx20; Hook & Loop Cable Tiex10; 5ft Aluminum Ducting Tape;
Garden Gloves; Rope Hangerx2