Seedsman Gelat.OG Fem

[Big Perm]

I need to raise the humidity in this tent. I can do so by pushing a couple buttons.

 

[SCJedi]

What brand/kind of controllers are they and what do you have plugged into each?

I really wish that I never sold my multi-function controller but it was time and I wasn't using it. I still have a full-blown CO2 system that sits and collects dust because I am limited to just using a 5x5 tent....for now.

 

[NoWaistedSpace]

I try to stay close to it except after about week 4 in flower because my buds in a 4x4 can’t handle that high of humidity. Would need 2-3 more fans and I prefer 2-3 more plants.

I try to stay around 60% RH.
That chart is more for veg VPD #s.
Here's the formula. Start at 0 (left corner)

How you can influence and change VPD:

1. Temperature
   • Increase temperature (run a heater or reduce AC): increase VPD
   • Decrease temperature (increase AC): decrease VPD
2. Humidity
   • Increase humidity (run a humidifier): decrease VPD
   • Decrease humidity (run a dehumidifier): increase VPD
3. Light Intensity
   • Increase light intensity (move lights closer, etc): increase leaf temps : increase VPD
   • Decrease light intensity (move lights farther, etc): decrease leaf temps : decrease VPD

Ideal VPD for Different Stages of Growth
So now you know what VPD is, how it impacts plants, and how you can change VPD. All that’s left is to figure out how to use this information in your own grow. Ideal VPD, as a general rule for plant growth, is around 0.8 – 1.2 kPa (kilopascals). However, your plants have different needs during different stages of growth. You need to tailor your grow environment to the stage of growth that your plants are in. Below are some general recommendations, but keep in mind that these recommendations can vary strain to strain, and setup to setup. As always, observe your plants and tweak things accordingly.

1. Ideal VPD for Clones
   • Clones are baby plants, they can’t handle a lot of stress because they are still just trying to form roots. Target a higher humidity and VPD closer to the lower end of the general range.
   • The ideal VPD for clones is closer to 0.8 kPa.
2. Ideal VPD for Vegetative Stage
   • In veg (vegetative) stage the plants are bigger and more robust. You can reduce the humidity in your environment to increase VPD. This will increase water and nutrient uptake, but you don’t want to increase VPD too much. This will cause the stomata of the plants to close, causing them to absorb less CO2. CO2 is particularly important in the vegetative stage, because that’s the main ingredient that plants use to grow large.
   • The ideal VPD for the vegetative stage is close to the middle of the general range, around 1.0 kPa.
3. Ideal VPD for Flower Stage
   • In flower stage the plants are robust, but the flowers are sensitive to various issues. You need to avoid excess humidity.
   • The ideal VPD for the flower stage is closer to the top end of the range, 1.2kPa – 1.5kPa.

 

[Old ST1R]

There is snow on the ground as I type this. That's what a tent is for, environmental control. I can zip up the tent and be in the Amazon in about 30 minutes if I want. I highly recommend tents. I can't imagine keeping my house 65% humidity in the winter.

i tried putting a humidifier in the tent but the humidity was quickly expelled through the exhaust fan. it works marginally better if the humidifier is in the same room as the tent.

 

[Big Perm]

i tried putting a humidifier in the tent but the humidity was quickly expelled through the exhaust fan. it works marginally better if the humidifier is in the same room as the tent.

Put your exhaust fan on a humidity controller, or see if you can get away with not running it at all. With LED you can get away with lot higher temps than other lighting, depends on the light.

 

[NoWaistedSpace]

Here is the website with all the info plus a calculator.

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...

getpulse.co

 

[Old ST1R]

Put your exhaust fan on a humidity controller, or see if you can get away with not running it at all. With LED you can get away with lot higher temps than other lighting, depends on the light.

I’m running a 600 Watt MH/HPS in a 2 x 4 tent.

 

[Big Perm]

I’m running a 600 Watt MH/HPS in a 2 x 4 tent.

Oh.
Cool tube?

 

[Big Perm]

I’m running a 600 Watt MH/HPS in a 2 x 4 tent.

and holy shit dude. I thought when I was running a 1000w DE in a 4x4 I was blasting.

 

[Old ST1R]

Oh.
Cool tube?

Yep.

 

[Old ST1R]

and holy shit dude. I thought when I was running a 1000w DE in a 4x4 I was blasting.

At first it seemed like overkill, now (on my second grow) it just seems “meh”.

 

[Big Perm]

Yep.

Are you happy with your setup, or are you wanting to change.

 

[Old ST1R]

Are you happy with your setup, or are you wanting to change.

I really want another tent. One of those three chamber dealies where I can keep bonsai mothers, clones and a veg area using my current tent for flower. If money were no object, I’d get all LED lighting.

 

[Big Perm]

I really want another tent. One of those three chamber dealies where I can keep bonsai mothers, clones and a veg area using my current tent for flower. If money were no object, I’d get all LED lighting.

If you ever want to DIY something, hit me up and I'll help you out if you need it.

 

[Old ST1R]

If you ever want to DIY something, hit me up and I'll help you out if you need it.

Ive been hitting HLG and other sites, but all the diode and driver talk and terms are over my head. I’m pretty handy though. Always like doing stuff myself if I can.
You are talking about DIY’ing lights, right?

 

[Old ST1R]

BTW, before I started growing and was just getting interested in it, I swear I watched several of your vids on YT and was in awe of your grows.

Thanks for the inspiration! And happy to make your acquaintance here.

 

[Big Perm]

Ive been hitting HLG and other sites, but all the diode and driver talk and terms are over my head. I’m pretty handy though. Always like doing stuff myself if I can.
You are talking about DIY’ing lights, right?

BTW, before I started growing and was just getting interested in it, I swear I watched several of your vids on YT and was in awe of your grows.

Thanks for the inspiration! And happy to make your acquaintance here.

Thanks man, I appreciate it.
Yeah I was talking lights, or anything else. I'm pretty handy, too.
I'll just tell you what I think you should get. I won't argue with people over LED shit.
I'm sure you can put it together yourself just fine.

 

[Big Perm]

Day 10


Edit: The seedling in there is a Reg. I'm wanting to sex it as soon as possible. If it's a male I'll toss it. If it's a female I'll veg it out and clone it.
It's a Super Silver Haze x Grimace OG

 

[Big Perm]

What brand/kind of controllers are they and what do you have plugged into each?

I really wish that I never sold my multi-function controller but it was time and I wasn't using it. I still have a full-blown CO2 system that sits and collects dust because I am limited to just using a 5x5 tent....for now.

I would go with Inkbird controllers

 

[Big Perm]

Day 14