What do you do at night for mold and mildew? I just got my inkbird calibrated to the Pulse One’s (which I love) humidity so they can act in sync. I just got this set up this morning. I also have 3 small oscillating fans going (I have 2.5”x5”x7.5” tent) with a t6 inline (in tent) and shutter exhaust outside of tent in the lung room to help with the passive air.
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Do you have inkbird thermostat as well as the humidistat? On the cooling side, I have an exhaust blower connected with speed control dialed way down low. My tent is in basement which runs about 15 degrees cooler and humidity in high 40s. I have the following setup:
Humidistat:
Humidify: three 1.2 gal ultrasonic humidifiers
Dehumidifier: exhaust blower with speed controller on low
Thermostat:
Heat: Electric heater on low
Cool: exhaust blower with speed controller on low (separate blower than Dehumidify above…I have two blowers)
With higher Temps in tent in cool dry basement the cooling cycle rarely hits. Mainly the heater and humidifiers run. When I switch to night mode, the blowers kick on for a time to get to night levels, then the inkbirds maintain. The tent balances within about an hour.
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You helped me figure out how to connect the extra Vivosun inline can I had! This is now how I have it set up… with a plug to my weedstagram 
Let me see if I can name all the tech to automate this tent…
@pulsegrow Pulse One supervising!
@inkbird_us IHC-200 Humidity Controller (1 Vicks Vaporizer, and 1 auto-restart dehumidifier draining out to sump)
@inkbird_us ITC-308 thermostat (cooling:
@vivosun.official 6 inch 440 CFM in-line fan, heating: small space heater TBD)
@acinfinityinc Airlift S10 shutter exhaust constantly running on low to pull air from lung room and helps pull air through tent.
@acinfinityinc Cloudline T6 inline duct fan with temp humidity controller (use for temp specifically)
@mygeeni Smart Surge Protector - This is great cuz you can make timers per plug (this is where I set my grow light timer)
@horticulturelightinggroup HLG 600 R-Spec
@vivosun.official 60”x32”x80” grow tent
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Woohoo! Nice! Just switched into full veg today. Pulled my T5s and started up the 1K mh. Picked up a hortilux blue 1K today and fired it. Tent balancing now, but my humidifiers are working hard now that I switched to air cooling the 1K light. Will move to 1.2 vpd tomorrow. That should drop humidity a bit more.
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Whoa looking great there! Jealous of the tent size. Is that a cool mist humidifier? Do you find it makes a difference (versus warm mist)? I took my plant’s leaf temp (cool mist), and it was low. (like 69 degrees), in relation to where the temp was. So i’ve adjusted the temp on the app. Is that it? Do I ever recheck the leaf temps again? Anyhow, I feel like there are a million variables I can chase! Sweet Pilea Peperomiodie (sp?)!
Thx…tent is 5x5. I have three cool mist humidifiers. Not sure if cool vs warm matters. I just don’t want to have to change filters on the evap style humidifiers. I change my vpd leaf temp offset with major gear swaps, mainly with different lights, etc. Yeah I stuck a few extra plants i want to boost in the tent. Pilea, basil, and an Amaryllis for Christmas…maybe.
Hey @laserboy - how do you have have 3 humidifiers connected to the “working 1” plug of the Humidistat? Are you using an extension cord?
This looks great, thank you. I had an inkbird humidity controller and had no idea what it was capable of.
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Yes, just regular extension cord.
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I got an ITC-308 Wifi Temperature Controller to help dial in temps overall especially at night…the device the inkbird is hooked up to is a Tower 23 in. 1500-Watt Electric Ceramic Oscillating Space Heater with Digital Display…once everything is set the heater doesn’t kick back on…it beaps and never starts back up. Is it because it has its own settings? My impression was that it would override them? Anyone experienced this with any devices and the inkbird controllers?
Thanks
The ink-bird is a great controller but the device you are using has to be capable of Auto restart after power failure. This is how the ink-bird controls your device. It’s simply turn the power off and on to the controlled Outlet. If your device is not capable of Auto restart after power outage then you will need to manually turn it back on. Best to look for a device that advertises Auto restart or simply just look for a good old-fashioned physical knob and nothing digital.
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i run a inkbird ITC-608T and really like it. i bought a dehu and a space heater tht don’t have auto restart myself. oh well, live n learn.
if unit will not auto restart like H2Grow pointed out, you just run device direct to outlet. u will have to turn on manually if power goes out. it suks but wutevr. my dehu is direct to outlet, programmable and has a overflow hose so no worries. perfect for my little 3x3 tent.
but yeah, H2Grow is right. now i call/email or read question section on amazon. 
Hey laser, just curious which brand of cool most humidifiers you got going there? I bought a couple of similar ones but they unfortunately won’t turn themselves back on if I cut power to it (I tried unplugging and plugging back in, have to manually turn back on everytime). They’ll be alright to supplement my main humidifier but I’m gonna need to get some more now that can be controlled for my second tent.
Hi Winger17, I have three vicks filter free cool mist humidifiers. I have a 4th on order. They hold 1.2 gals each. I ordered a 4th one. My tent is 5x5 but with heater cycling and blower on low to cool three of these worked well, but four will be just right I think.
They have no electronic controls. Just variable output. I run all on max and let my humidistat control them.
I have the InkBird Humidity and temp controllers. I don’t use them any more for control. To much overshoot//hunting.
I keep my HLG55 Rspec fixed at very top of tent and lower raise plants and adjust HLG intensity to get my PPFD. This dictates tent temp and I adjust humidity to hit VPD.
I use a PLUG’N’GROW PNG-030 HUMIDITY controller. It uses FUZZY" logic so it learns your settings and anticipates and keeps humidity on target with very little over shoot. It has its own internal fan to move air over the sensor for VERY FAST readings. It also has a NIGHT setting so your night time humidity is controlled independently of daytime settings. This controller kicks butt and is VERY affordable.
If the Pulse had an interface or ability to control humidity (like the Plug’N"Grow) based on temperature data throughout the day we would have the absolutely best control on market!! It would impress even ME even more!
I used this one in a grow before. Nice that you can direct where the output goes, and that you can fill it from the top.
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I get my humidity from keeping my plants hydrated but the InkbirdSmart set up is capable of keeping your grow dialed in. At least for me it does
When I open the tent the humidity drops significantly but if I don’t disturb it , it’s a well oiled machine
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I’m with you there tommy. I only have the humidity controller hooked up but it keeps the humidity fluctuating about 5% (57%-62% at the moment). Real dry where I’m at so even without opening the tent the humidity doesn’t take long to drop but it goes almost instantly down to about 25-30 when I open the tent.
Might have to invest in a little heater for next winter though. Feel like I’m walking the line here with low temp. But the ambient temperature outside right now is about -42 C (-50C with wind chill) so I think 17 with lights off and no heater isn’t too bad considering. Not ideal though
I have similar issue, where humidity and temps drop in tent whenever I open it, but with enough humidification ‘power’ it recovers within minutes of closing up the tent. One of the things I like about controllers is that they will self balance the environment…guess that’s the whole point of controllers in first place. Maintaining consistency, but also rebalancing when it gets disturbed.
The inkbirds do allow adjustment of the thresholds for heating/cooling as well as for humidification/dehumidification. The higher the threshold, the bigger the swing. I find that 3% rh differential and 2-3 degree temp differential works well after some experimentation. If difference values are set to high you get wider swings. If set too low, the system will fight itself and cycle heat/humidity too frequently. Be sure to check out these settings.
Much depends on how much airflow through the tent and conditions outside the tent. My tent is in cool and dry basement. So with colder weather (Maine) these days I need more heating for sure. More heating means more humidification as well.