Hygrowmeter in grow room?

Ricky111

Ricky111

Member
Hey everyone was thinking where do you guys hang you temp probe of hygrometers mind is all over reading temps in my tent lol
 
shpongler

shpongler

Well-Known Member
hygrometer, anywhere. considering you have decent airflow the RH% should be equal within the room.
Temperature, i have a temperature probe at canopy level and 1 digital hygro/thermometer at pot level
 
shpongler

shpongler

Well-Known Member
Kingrow1 said:
Is it a digital or analogue sping hygrometer?
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i have an analog and a digital one. either way it shouldn't matter where you place them. just avoid placing them directly under / near lights, because of the radiated heath the RH% will be lower there RH% means the amount of water air can hold under certain temperature. The hotter, the more water it can hold.
 
Kingrow1

Kingrow1

Well-Known Member
shpongler said:
i have an analog and a digital one. either way it shouldn't matter where you place them. just avoid placing them directly under / near lights, because of the radiated heath the RH% will be lower there RH% means the amount of water air can hold under certain temperature. The hotter, the more water it can hold.
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Thats why i was asking, all analogue units need shading if to be placed under the lights or just position them to the side out of the way of the lights.

Always chuckle when growers say they are experiencing low relative humidity and the hygrometer is placed unshaded under the lights.
 
Kingrow1

Kingrow1

Well-Known Member
Ricky111 said:
Like a digital one from a fan speed controler
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Fan speed controllers are normally thermostats not hygrometers, they measure temperature not humidity.

Most will want to record the hottest part of the grow tent and keep that 25°c or under so generally at the top of your canopy.

I use a max\min thermometer at the tops of my plants and a hygrometer at the side of my grow tent away from the lights.
 
Ricky111

Ricky111

Member
Kingrow1 said:
Fan speed controllers are normally thermostats not hygrometers, they measure temperature not humidity.

Most will want to record the hottest part of the grow tent and keep that 25°c or under so generally at the top of your canopy.

I use a max\min thermometer at the tops of my plants and a hygrometer at the side of my grow tent away from the lights.
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Yeah I have one of those to my Max is laying on my soil and its reading 30 it's summer now and have 4 600hps in veg atm to so lights are 24 hour
 
Kingrow1

Kingrow1

Well-Known Member
Well you know the ins and outs of where to place your thermometer and humidity meter so all i can suggest is start a new thread and see what you can do about the heat :-)
 
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