humidity control

Hi all RIU members, since I started the flowering phase the humidity has been going crazy and even though I have an old dehumidifier I can assure you it works. Basically with the lights off the humidity goes to 38% and with the lights on it takes off to about 51/52% rarely up to 55%. Even if the...

Hey guys im growing an Auto amnesia currently starting week 8 from tomorrow. I decided to scrog after LSTing initially. How am I doing? Im a bit worried that my plant is too bushy and that i might be risking PM or mould if i dont defoliate. RH has been a steady ~50% give or take 10% up or down...

So I'm just setting up a new grow tent in a new space and I've been battling low humidity. I purchased a small humidifier which works well on its own. When I turn the exhaust fan on, on lowest setting, the humidity drops down to around 45~40; is that too low to keep the humidity?

I built a stealth grow box out of an old filing cabinet (a rather smaller sized one as it’s a stealth box. It measures 18”w x 28”d x 60”h). I started by removing all the drawers, and roller tracks so it was just the metal shell of the filing cabinet. I then removed the faces of the drawers and...

Hey guys, I’ve recently moved and upgraded my set up. I’m in mid flower and the high humidity is KILLING ME! This is going to be my first winter at this location. Here’s my set up. Tent: 4x4x8 Light: Gavita 1700e Out: 4” inline fan with carbon filter In: 4” Inline fan Medium: 16 Rockwool Hugo...

I’m not sure what the cause of it is, but I’ve been having issues with high humidity recently. I’m about 4 to 5 weeks into my grow and this is the first time it’s happening. Humidity was staying around 55%, but now it’s always around 65%. I recently up-potted to 5 gallon pots, could that be the...

Installed a new dehumidifier inside my tent (humidity inside my house sucks). It's causing some heat however it still never goes over ~84 so I'm not worried about that. My remote monitoring system has been seeing a TON of fluctuations though (see graph below). I'm thinking these super short...

So everyone said don‘t grow in a crawl space. However, I wanted to setup a second tent and that is the only place that I had room. This is what I did. I setup a 3x3x6 grow tent on its side, bought a 4 foot LED (link below) put a heated tile floor in for the winter, and a can 33 filter and fan...

I'm growing my first plant and I'm having issues with humidity regulation so I'm wanting to tap my humidifier into a controller to turn on/off when the humidity reaches a certain %. My humidifier power adapter is 18v and I was curious which of the below would work for it. The power supply in...

I remember seeing someone share a link to a diy box thing that helps control the humidity, raising it when its low and lowering it when its high. I have a humidifier that just crapped out on me and most the year I have to have a dehumidifier running, If its possible to build something that does...

Hi there, about to buy a dehumidifier for my room 3x3x6ft, 600w. I’m in the 2nd week of vegging, keeping humidity btw. 50-60%, but spiking at nighttime up to 70+RH. Controlling humidity with the Inkbird IHC 200. Growing 1 Tomato (scrogging). What size do I need? Any cheap(ish) options? Any...

Morning y‘all, Anybody got an Idea how to decrease humidity in my shed? Need some DIYadvice; money don’t grow on trees, and I’m brassic at the moment. Any advice appreciated! Good start to the week! RW :peace:

Hey guys, just wanted to get some suggestions from you on what humidifier to use in my 4x4 grow tent, id like to be able to control levels with an ink bird humidity controler if possible so im not stressing, like i am at the moment with my current low budget humidifier raising the RH above 80%...

So I bought a hygrometer Only this 1 is Bluetooth, it's around £8-12 so not too expensive, you download an app then you pair it then you have a digital display on your phone to keep track, and the party trick is that you can set it up to send you notifications if the temperature or humidity is...

Second grow and looking for advice. I use a temperature controller to maintain my temps and the humidity is just fine while lights are on. When lights are out, my humidity jumps to 80%. No heat to remove the humidity in dark. What have others used to control humidity when connected to outside...

So I'm just starting out and while my seeds are germinating I've been trying to improve my greenhouse environment. This morning i noticed i had a temp of 66° and 85RH. To give a little context, on one side of the greenhouse i have a 20 inch box fan blowing air in from a almost ground level...

Can I add a mix of water baking soda and a lil dish soap to rid my plant of white powder mildew during Flower cycle? And how will it affect my Hindu Kush plant that's early into flower if I remove the heavily affected leaves? . I have ventilation problems at the moment and I'm trying to remedy...

Hi wise folk of roi. I have a humidity problem, I've got a 240 x 12x 200 tent. Extractor running air out only into the room with carbon filter, ped fan circulating inside tent and small fan blowing air in air ports open when lights on got 2 x 400 at HP's and 7 on the go but the humidity sits at...

Wondering if I should worry about humidity of 73% during week 3 of flower I have a aircon with the dehumidifier setting, might just buy one a small one off eBay... what are the ideal conditions for the coming weeks? Here is this morning I’m only asking coz I don’t want to get any mould in my babies

Hey guys, I'm still kinda newbing it up here so I'm looking for advice. I have been growing in a 3'x3'x6' tent in a finished basement. I'm running a VIPARSPECTRA Reflector-Series 600W LED Grow Light, 2 desk fans for circulation and an exhaust fan, running on lowest setting. Im growing 3 plants...