Hygrometer/thermometer position?

Eugenios · Jan 20, 2021

Hey guys, hope you're all well. In my 2x2 I currently have 3 thermometers/hygrometers (lol).

One's at the top of the tent:
Temp: 27.1°c
RH: 26%

Second is in the bottom of the tent (not in the shade):
Temp: 26°c
RH: 43%

Third is on top of the soil, below the canopy (in the shade):
Temp: 21°c
RH: 77% (Soil's moist, watered yesterday)

My situation really looks and sounds stupid so I guess I'm doing something wrong. It's a very simple thing but I make it complicated. In your experience, how many meters do I need and where exactly would you place it/them for most accurate reading. I used to have one in canopy level but many people told me not to. No idea why, don't remember

*KEEP IN MIND THAT I'M TALKING ABOUT A 2X2X4, BUT I ALSO HAVE A 4X4X6.5.

Much Love and many thanks!

Beehive · Jan 20, 2021

I use three sensors. Two are stuck on top of the net. #1 sensor is hung from the light rack. About 4" above the plants.

It's not so much what the sensors say because I verify the temperature with an IR thermometer. So if sensor #1 reads 83°. That means the canopy is running between 74°-76°. With the under canopy measuring 77°.

The room heater is set at 81°, lights on. 76° lights off.

Eugenios · Jan 20, 2021

Beehive said:
I use three sensors. Two are stuck on top of the net. #1 sensor is hung from the light rack. About 4" above the plants.

It's not so much what the sensors say because I verify the temperature with an IR thermometer. So if sensor #1 reads 83°. That means the canopy is running between 74°-76°. With the under canopy measuring 77°.

The room heater is set at 81°, lights on. 76° lights off.

How is your "under canopy" temp higher than canopy level?

Beehive · Jan 20, 2021

Eugenios said:
How is your "under canopy" temp higher than canopy level?

I'm guessing its the way I have circulation. The oil heater is positioned in front of the door intake vent on the inside. The incoming air is passed through the heater coils.

I have a box fan hung flat from the ceiling. One tower fan in a corner. A desk fan under the plant shelf blowing length wise. Two clip ons on both ends of the net frame pointed towards the wall behind the plants. And one tiny fan in between both plants. (2 plants total).

The lower fan leaves is what measures 77°. The inner growth around the main stem measures ~74°.

Eugenios · Jan 20, 2021

Beehive said:
I'm guessing its the way I have circulation. The oil heater is positioned in front of the door intake vent on the inside. The incoming air is passed through the heater coils.

I have a box fan hung flat from the ceiling. One tower fan in a corner. A desk fan under the plant shelf blowing length wise. Two clip ons on both ends of the net frame pointed towards the wall behind the plants. And one tiny fan in between both plants. (2 plants total).

The lower fan leaves is what measures 77°. The inner growth around the main stem measures ~74°.

Thanks for the info bro. Happy growing!

BBQtoast · Jan 20, 2021

Eugenios said:
Hey guys, hope you're all well. In my 2x2 I currently have 3 thermometers/hygrometers (lol).

One's at the top of the tent:
Temp: 27.1°c
RH: 26%

Second is in the bottom of the tent (not in the shade):
Temp: 26°c
RH: 43%

Third is on top of the soil, below the canopy (in the shade):
Temp: 21°c
RH: 77% (Soil's moist, watered yesterday)

My situation really looks and sounds stupid so I guess I'm doing something wrong. It's a very simple thing but I make it complicated. In your experience, how many meters do I need and where exactly would you place it/them for most accurate reading. I used to have one in canopy level but many people told me not to. No idea why, don't remember

*KEEP IN MIND THAT I'M TALKING ABOUT A 2X2X4, BUT I ALSO HAVE A 4X4X6.5.

Much Love and many thanks!

Work out why the shaded one is the lowest temperature and highest humidity and it will answer your question.

Hint try checking them all after lights out.

quirk · Jan 20, 2021

I utilize this infrared point and shoot for temp and a Caliber temp/hygrometer placed on drainage rack. And yes the
point and shoot takes accurate temps on reflective surfaces. Inexpensive, useful tool for many applications.

Hygrometer/thermometer position?

Eugenios

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Beehive

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Eugenios

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Beehive

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Eugenios

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BBQtoast

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quirk

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