what is your rh fluctuation between lights on and lights off?

[GreenGalaxyFarm]

how do you maintain rh during lights off
how big is your space

 

[Greenjourneyman]

4x4, and humidity shoots up at night esp in bloom

 

[GreenGalaxyFarm]

4x4, and humidity shoots up at night esp in bloom

how many plants do you grow in the 4x4 for bloom, what does it shoot up to

 

[Observationist]

how do you maintain rh during lights off
how big is your space

Use the AC or open door.. currently

I've seen it at 90% before when the tent is sealed up.

Says it's 78% outside around Tulsa


I may just have to invest into a quest in the Future

 

[Cirroji]

Just flipped to lights off and have my humidifier turn off at the same time while i increased the airflow out.

was getting high 70s and then right back to 48% after lights on..

 

[GreenGalaxyFarm]

Just flipped to lights off and have my humidifier turn off at the same time while i increased the airflow out.

was getting high 70s and then right back to 48% after lights on..

what size is your grow space, is 70 highs okay for flower. 48% is good

 

[Cirroji]

what size is your grow space, is 70 highs okay for flower. 48% is good

4x4x6

 

[Moe.Red]

I run 4x8s with hydro and I’m always chasing rh issues. Or I was. Even with a mini split ac and 70lt dehumidifier at peak plant I would get lights off spikes in the 80s at times. No bueno for mold.

I put this in and problem resolved. It’s overkill for most grows but I was sick of not having control over VPD.

AlorAir Duct-able Version Basement/Crawl Space Dehumidifiers 198 PPD Commercial Industrial Dehumidifier with Pump & Drain Hose, Energy Star Listed, Auto Defrosting, 5 Years Warranty, Whole Homes https://a.co/d/cVXA5mk

 

[GreenGalaxyFarm]

what was the rh before the 80 spike
I was thinking to run with a dehu the rh down into the 30s in flower till lights off how much rh would 12 girls in late flower add to room currently 54% lights on 51% lights off currently in very early veg

 

[Madmax]

I run 4x8s with hydro and I’m always chasing rh issues. Or I was. Even with a mini split ac and 70lt dehumidifier at peak plant I would get lights off spikes in the 80s at times. No bueno for mold.

I put this in and problem resolved. It’s overkill for most grows but I was sick of not having control over VPD.

AlorAir Duct-able Version Basement/Crawl Space Dehumidifiers 198 PPD Commercial Industrial Dehumidifier with Pump & Drain Hose, Energy Star Listed, Auto Defrosting, 5 Years Warranty, Whole Homes https://a.co/d/cVXA5mk

Me also ..certain times of the yr like right now smack bang in the middle of summer and no ac growing in a shed and at the pointy end of the grow I’ve just got to let it ride..getting the spikes light on .it’s like 27 + deg in a 5x5 with 2 250 watt dehuey s going and fans flat chat.running hepa filtration but those damn spores get in through the door when I enter the shed…the big buds always attract it,and a full room of plants pest help..lol

how many watts is that beast Moe..

 

[linuxr]

My basement has central air. In my tent I have the ac infinity controller 69 and a basic humidifier set on 70%. The controller keeps my rh at a high of 62 and a low of 60.

 

[Moe.Red]

what was the rh before the 80 spike
I was thinking to run with a dehu the rh down into the 30s in flower till lights off how much rh would 12 girls in late flower add to room currently 54% lights on 51% lights off currently in very early veg

So running daytime in the 55% range, shut the lights off, temps drop, leaves let go of the water they have in them and boom spike.

I have come down in the morning before to water droplets all over the inside of the tent. That's a problem. I run sealed with CO2, which makes it worse.

 

[Moe.Red]

how many watts is that beast Moe..

Says 639, but it does not run full time. The AC does most of the work, this thing kicks in when the ac is not enough.

But yeah, it's like having another light. Way overkill for most.

Nice to have it outside the tent tho, it does make heat which is not put into the tent

 

[Madmax]

that’s the main reason why I haven’t bought a bigger one..just using too much power Moe.my dehuey which is on the floor is going up and down like a yo-yo after giving them a drink.it fluctuates from 59-68 .fan goes off when rooms cooled then in the space of 1.30secs goes to 68 and has gone to 74.the inkbird at canopy level is saying 50% and the dehuey which is setup at a little below canopy level is saying 50-52%..I’ve usually been able to control it lights on but not this grow .I think I might of overdone it throwing an extra plant in there

 

[GreenGalaxyFarm]

how many plants in your 5x5 @Madmax

 

[Madmax]

I got 7 in there vegged 5 weeks .I’m not using a ft of the front as I have fans and a dehuey there,apart from the front corner where I’ve squeezed another in.couldn’t help myself .I have been averaging a little over 2 p from dragonsflames dude your drooling strain running only 6 and was getting the reasonably heavy yielding phenos ..big buds don’t go well in a crowded room even when your running hepa filters on the intake.soon as I open the door she gets in..I ran the Mac dragon bx-1 last grow which had smaller buds but with a couple good plants in there,7 in total and there wasn’t any mold what so ever.was 2 oz short of 2p but..

 

[Greenjourneyman]

how many plants do you grow in the 4x4 for bloom, what does it shoot up to

With 6 plants day to night fluctuation was 62% to 80%, in bloom it can peg the dial at 94%. I have 12 in there right now, struggling to keep at the daytime 60%.

 

[Cool_Beans]

Our Hvac system has built-in dehumidifier so I set the ambient rh on my t-stat at 40% then use the tent exhaust fan via controller 69 to regulate rh in the tent. I keep it around 45-50% these days(late flower). My day/night temps fluctuate 5 degrees or so but rh stays relatively stable.

 

[GreenGalaxyFarm]

With 6 plants day to night fluctuation was 62% to 80%, in bloom it can peg the dial at 94%. I have 12 in there right now, struggling to keep at the daytime 60%.

94% in flower no bud rot?

 

[GreenGalaxyFarm]

Our Hvac system has built-in dehumidifier so I set the ambient rh on my t-stat at 40% then use the tent exhaust fan via controller 69 to regulate rh in the tent. I keep it around 45-50% these days(late flower). My day/night temps fluctuate 5 degrees or so but rh stays relatively stable.

sound like you got things dailed in there, whats the temp in room with everything running or vpd