FlytrapCare Carnivorous Plant Forums

My grow tent is not getting the drastic nightly drops in temperature that my nepenthes need. For example, it could be 56 degrees outside, and it would be 65 degrees inside the grow tent, even with fans pulling in air from the open window and an exhaust fan running. The first three days of making the "vent" worked wonderfully. I got nighttime drops down in the 50s. But those three days were the exception. The next day and the days following, those drops just wouldn't come. I tried everything, from switching to new exhaust fans to new humidifiers, even turning off the humidifers at night and letting the cool humid air do all of the work (it was worse than previous attempts, only dropping to about 68).

I don't want to invest in an AC unit in the time being as I am quite spent budget wise.

What can I do?

Ask for more information if what I provided was insufficient!

Thanks.

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I’ve seen people mention putting ice in with neps and darlingtonia at night to drop the temperature.

What size is the grow tent?

andynorth wrote:What size is the grow tent?

56x56 at its base, and 6 feet at its height

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So do you have shelves inside? Mine are 24x24x48. I have shelves inside with lights under each shelf and black shelf liners. Although I run the lights for 22 hours a day, I can easily turn lights off as needed. If you have a humidifier, have you tried leaving it on when the lights are out at night? Fans are going to draw in whatever air is outside which could pose a problem. Possibly put ice cold water in the humidifier and that should cool it down quite a bit.

I do run the humidifers at night, and the grow lights turn off at about 8 pm.

I haven't tried putting chilled water into the humidifiers though, is that effective?

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andynorth wrote:So do you have shelves inside? Mine are 24x24x48. I have shelves inside with lights under each shelf and black shelf liners. Although I run the lights for 22 hours a day, I can easily turn lights off as needed. If you have a humidifier, have you tried leaving it on when the lights are out at night? Fans are going to draw in whatever air is outside which could pose a problem. Possibly put ice cold water in the humidifier and that should cool it down quite a bit.

And yes, they have shelves... though I only ever use one per side. I disassembled the rest as they were directly touching the light.

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Sp0nser wrote: ↑Fri May 03, 2024 12:09 am I haven't tried putting chilled water into the humidifiers though, is that effective?

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I have never had to do this but I would imagine it would help cool things down. If your tank is large enough maybe try throwing some ice cubes in? Is it placed near where your plant(s) is/are? I keep mine as close as possible to my plants that require a lot of humidity.
I also have an indoor greenhouse and by utilizing the top shelf for all my drosera, the second shelf down gets about an 8 to 10 degree drop in temp.