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spasm666
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Registered: 06/14/17
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Timers/Inkbird and outside humidity
#28500026 - 10/11/23 11:47 AM (3 months, 16 days ago) |
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Hi. This post is aimed at seagu (I think) and other folks who use cycle timers for their FC humidity control.
So I originally had my humidifiers hooked to an Inkbird, but when it was rainy outside I didn't get any action from the humidifier, so I switched to cycle timers. But now the problem is that I constantly need to adjust the cycle timers to match the ambient RH% outside the FC. The RH% in the operation room greatly vary, it goes from 30% to 60% depending on the weather. Do you guys adjust the cycle timers based on the RH% outside or have you found a sweet spot you can set and forget regardless of what happens outside? 30% and 60% are so far from each other that one setting only seems impossible.
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Southerner
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Registered: 03/25/21
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Re: Timers/Inkbird and outside humidity [Re: spasm666]
#28500493 - 10/11/23 06:15 PM (3 months, 15 days ago) |
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Set and forget. Since switching to timers I have no idea what the actually humidity swings are in the tent. I have the exhaust come on for a couple of minutes followed immediately by the fogger which clouds the room up pretty well. Then there’s a few minutes with the fog slowly dropping until the exhaust kicks back on.
Could try timing how long it takes to fog your tent up and set your timer to that. Adjust as needed for the mushrooms and excess moisture.
One thing that’s an issue with offset timers though is if the power flickers or goes out when they come back on they’ll be in sync. Considering putting the exhaust back on all the time unless I figure out a better way. Just something to keep in mind.
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Stromrider
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Registered: 06/02/13
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Re: Timers/Inkbird and outside humidity [Re: Southerner]
#28500525 - 10/11/23 06:34 PM (3 months, 15 days ago) |
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https://www.amazon.com/dp/B098WXZ783?ref=ppx_pop_mob_ap_share
These digital cycle timers have battery backup and you don't have to fix them if the power gets interrupted
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Southerner
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Re: Timers/Inkbird and outside humidity [Re: Stromrider]
#28501287 - 10/12/23 07:47 AM (3 months, 15 days ago) |
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Fucking awesome, thank you Strom.
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spasm666
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Re: Timers/Inkbird and outside humidity [Re: Southerner]
#28501519 - 10/12/23 11:09 AM (3 months, 15 days ago) |
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I think I have the same timers, with different brand name and EU socket though. But indeed with battery backup.
I have my exhaust timed the opposite way than Southerner. Meaning that it's only 1min off and a few minutes on, otherwise I get too much stipe. So can't really sync it with the humidifier like you do. Haven't found a sweet spot, humidity in FC drops way too much when it's 30%RH outside, and if I set it to be ok in 30%RH, it's 99% and pooling when it's 60%RH outside.
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Stromrider
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Re: Timers/Inkbird and outside humidity [Re: spasm666]
#28501643 - 10/12/23 01:20 PM (3 months, 15 days ago) |
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Maybe you could get a more powerful exhaust fan so it can be off longer
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spasm666
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Re: Timers/Inkbird and outside humidity [Re: Stromrider]
#28501675 - 10/12/23 01:54 PM (3 months, 15 days ago) |
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Yeah I guess I could. It's already 470cfm with 150 watts consumption so I'm not exactly thrilled on the idea of upgrading though.
Edited by spasm666 (10/12/23 01:56 PM)
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RockinRobot
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Re: Timers/Inkbird and outside humidity [Re: spasm666]
#28501711 - 10/12/23 02:21 PM (3 months, 15 days ago) |
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I use a cycle timer for exhaust and Inkbird for humidity. Set inkbird for 3-4 RH below my target with a 10 RH swing. Cycle timer runs 2 min every 8. been working well for me. I do have them runningin a weed grow room with it's own AC though so RH in the room even with outside exhaust stays ~50% even when humidity outside is in the 90+% range
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Southerner
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Re: Timers/Inkbird and outside humidity [Re: RockinRobot]
#28501741 - 10/12/23 02:39 PM (3 months, 15 days ago) |
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What are the dimensions of your tent spasm? My exhaust is about half as strong and works well for a 6x4x7 tent. Might be overkill on the air. Not that that’s a bad thing if you can keep the humidity up with it.
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seagu

Registered: 03/03/18
Posts: 952
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Re: Timers/Inkbird and outside humidity [Re: spasm666]
#28501868 - 10/12/23 03:54 PM (3 months, 15 days ago) |
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Quote:
spasm666 said: Hi. This post is aimed at seagu (I think) and other folks who use cycle timers for their FC humidity control.
So I originally had my humidifiers hooked to an Inkbird, but when it was rainy outside I didn't get any action from the humidifier, so I switched to cycle timers. But now the problem is that I constantly need to adjust the cycle timers to match the ambient RH% outside the FC. The RH% in the operation room greatly vary, it goes from 30% to 60% depending on the weather. Do you guys adjust the cycle timers based on the RH% outside or have you found a sweet spot you can set and forget regardless of what happens outside? 30% and 60% are so far from each other that one setting only seems impossible.
I have found a sweet spot that I set and forget. It did take me some testing to find it. I used the inkbird to measure the humidity. I tested in multiple areas of the FC too. And I tested on both rainy and non rainy days. And let me tell you.. once I found the sweet spot.. it is very very nice...
-------------------- Plan to win or you are planning for failure. Don't let anyone tell you you can't do it. Just figure out the solution. Even if that means banging your head on a wall until the solution oozes out of you.
Edited by seagu (10/12/23 03:55 PM)
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seagu

Registered: 03/03/18
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Re: Timers/Inkbird and outside humidity [Re: spasm666]
#28501882 - 10/12/23 04:03 PM (3 months, 15 days ago) |
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Quote:
spasm666 said: I think I have the same timers, with different brand name and EU socket though. But indeed with battery backup.
I have my exhaust timed the opposite way than Southerner. Meaning that it's only 1min off and a few minutes on, otherwise I get too much stipe. So can't really sync it with the humidifier like you do. Haven't found a sweet spot, humidity in FC drops way too much when it's 30%RH outside, and if I set it to be ok in 30%RH, it's 99% and pooling when it's 60%RH outside.
Once you get the right cycle time sweet spot.. that swing won't be a problem. The Timing factors all that in. If your mister is not strong enough though when the heat makes the amount of water that will be absorbed in the air more before mist appears, then you can see that being an issue. But then that only means that you need a timer setup for winter and for summer.
-------------------- Plan to win or you are planning for failure. Don't let anyone tell you you can't do it. Just figure out the solution. Even if that means banging your head on a wall until the solution oozes out of you.
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spasm666
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Re: Timers/Inkbird and outside humidity [Re: seagu]
#28502688 - 10/13/23 12:35 AM (3 months, 14 days ago) |
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Quote:
Southerner said: What are the dimensions of your tent spasm? My exhaust is about half as strong and works well for a 6x4x7 tent. Might be overkill on the air. Not that that’s a bad thing if you can keep the humidity up with it.
My FC is 11 x 7 x 7.5 feet. With my 12 disc fogger in a 55 gallon reservoir I can easily keep up the humidity. I earlier had one notch less powerful exhaust and it didn't do the trick quite well.
Quote:
seagu said:Once you get the right cycle time sweet spot.. that swing won't be a problem. The Timing factors all that in. If your mister is not strong enough though when the heat makes the amount of water that will be absorbed in the air more before mist appears, then you can see that being an issue. But then that only means that you need a timer setup for winter and for summer.
Thanks for the reassurance. I guess I'll just play with the timer more to find that sweet spot. Temperature in the FC stays the same all year, controlled with AC. And the fogger mists up the FC nicely.
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seagu

Registered: 03/03/18
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Last seen: 8 days, 5 hours
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Re: Timers/Inkbird and outside humidity [Re: spasm666]
#28503281 - 10/13/23 01:02 PM (3 months, 14 days ago) |
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Yea my FC is the same for temp, but when the outside temp changed so did the amount of water the air was able to hold. I believe that is because I pull in outside air for FAE.
-------------------- Plan to win or you are planning for failure. Don't let anyone tell you you can't do it. Just figure out the solution. Even if that means banging your head on a wall until the solution oozes out of you.
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