snoeman032
Well-Known Member
OK so running CO2 is making my RH very high should I run the dehumidifier with the lights on or the lights off or both?
Dehumidifier during co2 grow
- Thread starter snoeman032
- Start date
Dehuey needs to run based on the RH 24/7. The sensors on the units suck balls so I bought a dehuey with auto restart function and run it off an external humidity controller that I can calibrate as needed.
Also watch your humidity right after lights out. It can spike very high so letting temps drop slower or ensuring you have a big enough unit to handle that spike is important.
snoeman032
Well-Known Member
I didn’t ask about a controller crazy how things get off track.so I’ll be more specific. Should I run my dehumidifier manually during lights on, lights off or both
It was a comment related to my previous post. What are you not understanding? You should not run it manually... It needs to run as needed 24hrs a day to keep the RH desired. Who knows what size dehuey and how much you plants are respiring.
That's the whole reason I talked about a controller they are more accurate and you can set the parameters. On a dehuey they are generally +/- 5% that's a 10% swing. I thought you would rather I answer the whole question not just half assed say run it all the time.
But hey if you only want that part then run it all the time but don't say I didn't explain it to ya
It's hard for people to ask questions...the correct questions when they don't understand what they are doing in the first place. If there was any research done before this thread. It would have been found that there is a range for humidity for every stage of plant life.
How do you keep it in that range???
A controller.
How does you house stay in temperature range...a thermostat aka a controller
So people may not want to get mad at those that are trying to help and also being nice about it.
How do you keep it in that range???
A controller.
How does you house stay in temperature range...a thermostat aka a controller
So people may not want to get mad at those that are trying to help and also being nice about it.
Renfro
Well-Known Member
Leave it on 24/7. Set it as required to maintain the desired RH%.
Renfro
Well-Known Member
BTW - Most dehumidifiers I have seen will read the incorrect RH%. So verify with a reliable meter and set the unit as required to satisfy the reliable meter.
On a side note I love these things: https://www.amazon.com/Hydrofarm-Autopilot-Desktop-Monitor-Logger/dp/B01FYWU2IS
I use them in my rooms to check for micro climates in my rooms. They are handy.
On a side note I love these things: https://www.amazon.com/Hydrofarm-Autopilot-Desktop-Monitor-Logger/dp/B01FYWU2IS
I use them in my rooms to check for micro climates in my rooms. They are handy.
Much agreed. I was just pointing out that the accuracy of the sensor and the preset start/stop (deadband) of the typical house hold dehumidifiers are terrible. Especially if trying to follow vpd as you should in a high light CO2 supplemented room.
snoeman032
Well-Known Member
Thank you you’re the only person that answered my question correctly everybody else got on here talking about controllers and I’ll kinds of dumb shit I know a controller would take care of it. I clearly know that before I even made the post if I had a controller I would’ve never made the post to start with
snoeman032
Well-Known Member
Thanks for everyone’s input I believe I got it figured out for now I’m going to invest in a controller when I get the money but until then I’m just gonna leave it running and said the RH where I want it
voodoosdaddy
Well-Known Member
I never really worried about my humidity with the lights on. Running co2 makes your plants much hardier so they can take higher temps and humidity during the day. I was often running 90% humidity and 95-100 degrees.(plant variety makes a huge difference as well) At night I liked having my temps around 60-80 degrees and and 50% to 70% humidity. Higher temps at night can make for better growth/yield in some varieties but can make others stretch too much.
If I was NOT running co2 I tried to keep my humidity 40 to 75% and temps no higher than 80 during the day. If possible at night I always liked keeping them cooler...as low as 55 during the winter. You lose some weight but I think it makes up for it with terps and bud density.
The last 2 to 3 weeks of flower I always turned off the co2 also...Seems to help with terps. Just my two pennies.
If I was NOT running co2 I tried to keep my humidity 40 to 75% and temps no higher than 80 during the day. If possible at night I always liked keeping them cooler...as low as 55 during the winter. You lose some weight but I think it makes up for it with terps and bud density.
The last 2 to 3 weeks of flower I always turned off the co2 also...Seems to help with terps. Just my two pennies.
snoeman032
Well-Known Member
Thanks bud