No announcement yet.

Best location to place thermometer/hygrometer in grow tent?

  • Filter
  • Time
  • Show
Clear All
new posts

    Best location to place thermometer/hygrometer in grow tent?

    Recently moved my lights and have noticed a pretty drastic change in my hi/low temps and humidty readings. Nothing out of control but still a decent change from the 78-84° and 40-50%RH I was keeping.

    should it be down about canopy level? Base of pots? Above/below light?

    should I have multiple thermometers?

    where are your thermometers placed?!?

    I put mine on top of one of my pots.
    "Treachery and Old Age will overcome Youth and Skill"


      I like one on the floor and then one midway(I have a pocket on my tent for it). That way I have medium read between floor and heat from the lights midway. ...a guesstimate.
      Indoor- Coco coir & Perlite - 5 gal Smart pots
      Veg-T5s Flower- Platinum LEDS
      GH Flora Trio Cali-mag, Terpinator Liquid Bloom
      photoperiod feminized seeds

      Testing for the_honeysticks genetics


        I have 3 one at canopy level one at root level and one above the light.... it might be a little over board but I know what's happening in my climate and average temps/rh.

        Wise man say."Always someone who know more."


          I only have one ATM; it's clipped to my scrog net...downside is I have to open the tent to read it which could get tricky after I flip to 12/12.
          ****tent (2x4) and large light (Relassy 300W LED) is in storage for now until I can solve some household electrical issues****

          CoM Stonington Blend soil, distilled water; Liquid Squid amendment if needed, molasses for flowering

          "I'm making perfect sense. You're just not keeping up."


          • Chefbjy
            Chefbjy commented
            Editing a comment
            Yeah I bought one at Wal-Mart that has a sensor I put in the tent and can read from outside the tent 😉.

          I use two; one sitting on the bucket lid and and another identical one hanging 2 inches above the canopy. I raise that one out of the way whenever I'm working though, which is a lot.

          Chefbjy You could never have enough meters my friend. I'm thinking of putting another one a few inches above the lights as well to monitor the highest temps of the room.
          Cannabliss - Grow The Bliss
          White Widow Grow Journal


            with seedlings and small pots i put it right above the pot to monitor the roots don't get too hot, once they get bigger and stronger i put it above the canopy where the hottest spot is closer to the light to make sure it doesnt get over 30ºC


              I use this point and shoot for temp and place hygrometer in tent tool pocket. Kiss


              • 9fingerleafs
                9fingerleafs commented
                Editing a comment
                faaaaaaancy... be sure to stick some painters tape where you take your readings to avoid reflection interference

              Mine hangs from my T5 fixture among the tops/colas... about 5 inches from bulbs. This kept it in a consistent place during growth as I raised lights. It's the outdoor temp/rh sensor of an Accu Rite indoor/outdoor unit and has the sensors for my controllers taped to it. The display sits in the house where I see it several times a day/night in case something malfunctions out in the garage.
              FFOF +extra castings, compost, coco
              Veg 8 bulb T5 (blue)
              Flower 600w HPS
              alfalfa meal, bone meal, FF Big Bloom, Down-to-Earth Liquid Bloom
              1st grow White Widow
              Now growing GG4 auto and photo


              Check out our new growing community forum! (still in beta)

              Subscribe to Weekly Newsletter!