Hygrometer placement in a grow tent

[AgentPothead]

Hey all I was wondering about the best place to put my hygrometer inside my grow tent. I see people saying at canopy height, but not under the grow lights themselves. Are people just stringing it up to the support poles or something? I have been clipping it directly to the side of my smart pots, but I feel like that is reporting a higher humidity than the tent on average.

 

[Deprivation]

You have air movement in your tent, just velcro or zip tie it to a tent pole if its the remote sensor. You can slide it up or down as the canopy changes if you feel the need...

 

[AgentPothead]

You have air movement in your tent, just velcro or zip tie it to a tent pole if its the remote sensor. You can slide it up or down as the canopy changes if you feel the need...

Thanks for the quick response. I have a 240 cfm exhaust fan going 24/7 so yeah there is air movement. My hygrometer is not one of the good ones with a remote sensor, it's one of the small black boxy ones, I believe it is https://www.amazon.com/gp/product/B0013BKDO8 Mine doesn't seem to have a magnet in the back though. I was gonna just tie some twine to it and let it float in the middle of the tent, but that somehow felt wrong.

 

[Deprivation]

That works too...

 

[AgentPothead]

That works too...

Okay cool thanks. It probably seems a silly question to even ask, but first time grow so just want everything as perfect as possible.

 

[Limeygreen]

Put it around 4-6 inches from the top tips of the canopy, you can check it against your ambient humidity above the crop but within the crop will have a higher RH. This also depends on leaf area, the more leaf area the more transpiration the higher the RH. Since you are growing the crop for flowers it is a good idea to measure a little bit into the top of the crop to control the humidity around flower levels.

 

[AgentPothead]

Put it around 4-6 inches from the top tips of the canopy, you can check it against your ambient humidity above the crop but within the crop will have a higher RH. This also depends on leaf area, the more leaf area the more transpiration the higher the RH. Since you are growing the crop for flowers it is a good idea to measure a little bit into the top of the crop to control the humidity around flower levels.

Perfect, thank you for the information! I can't put it among the canopy leaves yet because they are all directly under the lights, but I have it hanging as close as possible while not being in direct light. Next time I will get one with just the small probe, these black box ones just soak up the heat.