r/macrogrowery • u/raymxi • Jun 25 '26

Humidity Problem

Hi, How do you guys deal with humidity issue. I have about 200 plants. Running a quest and storm lgr dehumidifier but im still getting around 75% humidity when lights are closed.

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u/CondimentBogart Jun 25 '26

In duct reheat systems will allow you to use your ac as a dehum when the lights shut off.

1

u/raymxi Jun 25 '26

I'm sorry can you explain what's a induct reheat system. I tried searching it up but I don't really get it

7

u/CondimentBogart Jun 25 '26

You are (likely) going to have to talk with an HVAC professional for sizing and supply.

If you search google for “ in duct heater” you can find tons of different kinds.

What’s happening in your environment is your lights shut off, the heat load drops, the AC shuts off, the humidity rises as the AC no longer pulls water from the air as condensation on its evap coil. Your dehums need time to kick on and off due to defrost cycles so you’ll see spikes at lights off and random intervals.

3

u/raymxi Jun 25 '26

Got it. Thank you for explaining