Higher temp at night?
- Thread starter Helmut79
- Start date
Illinois Enema Bandit
Well-Known Member
No,the higher temps will not harm the plants,even at 80 degrees 24 hours a day the plants will be OK .
HVAC is the techinacal term for a furnace,air conditioning etc,it stands for Heating,Ventilation,Air Conditioning,on commercial buildings you see HVAC sitting on roofs in 1 big square unit,in residential buildings it's a furnace & central air,either way HVAC covers the equipment used for Heating,vent and Air .
Back on topic I'm not seeing a wood pellet heat source working for you & I heat our winter home with wood,if the humidity isn't removed from the air in the room/building while heating you'll just increase the RH,if the moist room air was drawn thru a furnace & heated in a heat exchanger it would lower humidity via the furnace vent system,I'm not seeing how a passive wood heating system is going to lower the humidity .
We heat this home via the fireplaces in each bedroom & 1 in the living room that's L shaped & heats our dining room too,it's a newer home so the fireplaces all have blowers to distribute warmth,but we still need to run two 80 pint dehumidifiers all winter long to remove the moisture from the air,or turn our furnace on for a few hours everyday ,maybe I'm missing part of the picture but what I hear you describing is using your wood stove to heat the room,which without a way to remove moisture from the air will only add RH .
Lordhooha
Well-Known Member
Why not vent to the outside and let it take air in passively from your house? If that's not the case exhaust with at the top with a bigger fan and pull in air with like a 4 inch fan real slow. At least you'll have good air flow
Huckster79
Well-Known Member
Iv heard, not tried, zero temp diff will make tighter nodes. Also have heard late in flower can cut the aroma due to sugar flow or some damned thing. That one i experienced. I added ac to my room this year. I run warm, mid 80s w co2. I cut that off two weeks or so from harvest. I wanted no extra co2 and lower temps to finish now tgat i had controls. As i lowered daytime temp to low 70s all the sudden realized ambient temp was low 70s so i had zero temp diff.... they had been starting to stink good, and a few days i to zero temp diff i noticed it waining. So i didnt want another shitty round ( aug harvest was ruined smell and potency wise by the heat wave and i finished in the low 90s as i had no way of cooling at that time. I ran right out and got a programable thermostat for the ac to give it some temp diff, smell came back within a few days.
That being said id like to build off the rice idea.. before i had enviornmental controls i brought humidity down a fair amount with a 5 gallon bucket, holled drilled theoughout, filled w natural bbq charcol ( lump not brickettes) and then dumped pure silica kitty litter over it, prob 8lbs as its 4.89 for 4 lb bag at wally world. Silica is more absorbant than rice and cheap if u buy it as silica kitty litter not just as "silica gel". On bucket lid i attacched a cheapo bathroom fart fan... $15 brand new...room was 6x6x7.
I agree you could see more mold w the warm nights, remeber a temp increase doesnt change true moisture content in the air, it is a reative figure based off the airs potential to hold water based on its temp. Warmer air can hold more water. Theres just as much water in tne air in say a 67 degree room 60%rh as thete is in a 77 degtree room with 50%rh...(may not be the scientific equation but merely for example)
That being said id like to build off the rice idea.. before i had enviornmental controls i brought humidity down a fair amount with a 5 gallon bucket, holled drilled theoughout, filled w natural bbq charcol ( lump not brickettes) and then dumped pure silica kitty litter over it, prob 8lbs as its 4.89 for 4 lb bag at wally world. Silica is more absorbant than rice and cheap if u buy it as silica kitty litter not just as "silica gel". On bucket lid i attacched a cheapo bathroom fart fan... $15 brand new...room was 6x6x7.
I agree you could see more mold w the warm nights, remeber a temp increase doesnt change true moisture content in the air, it is a reative figure based off the airs potential to hold water based on its temp. Warmer air can hold more water. Theres just as much water in tne air in say a 67 degree room 60%rh as thete is in a 77 degtree room with 50%rh...(may not be the scientific equation but merely for example)
Huckster79
Well-Known Member
Per an online calculator if you are 67 w 60% rh w .0098 kg per cubic meter of air of water vaor in that air and all else stays same and u merely raise temp to 77. You would be at an rh of 42 but there still would be .0098 kg per cubic meter of water vapor in air.
Oh just increasing air flow with in room will help prevent mold too, doesnt just have to be exchange air. , so just some simple fans blowing through out will help. My spring round i finished in 60s rh n was just dandy n good n stinky
Oh just increasing air flow with in room will help prevent mold too, doesnt just have to be exchange air. , so just some simple fans blowing through out will help. My spring round i finished in 60s rh n was just dandy n good n stinky
Helmut79
Well-Known Member
I wasn't defending myself. I was just discussing and explaining. I get your point.
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Helmut79
Well-Known Member
This thread is starting to get to it's point now. It turns out I have been fooled by the hygrometer itself?
What kind of formula or calculator would help in this situation?
Seems like if people are talking about certain range of RH, then it wouldn't make much sense without mentioning temperature.
Right?
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Helmut79
Well-Known Member
Look what huckster said. Rh would actually decrease, but real moisture content would stay unchanged.
I've seen this by myself how RH goes down by increasing temperature of the room. Thanks to Huckster now I understand it's kind of an illusion.
Hygrometer doesn't measure an actual amount of moisture.
Still quite difficult to understand what's the best way to measure it.
Hopefully more people will join the discussion.
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Helmut79
Well-Known Member
For example - he suggested to not let RH go over 55%, but what temperature was he talking about? He didn't mention it. Now the moisture is a mystery.
Huckster79
Well-Known Member
Idk the answer on what would be the most accurate way to measure humidity. I think rh is simplest and therefore rough guides have been made. I think we all need to remember these are rough rules of thumb that we must adapt to our set ups.
RH at any temp would effect plants tranpiration... so RH definetky isnt obsolete measurement. l think making sure air is moving is as or more important than humidity for mold. Intuitively we all know mold in geeneral,not just growing, likes stagnant places.
This is a great topic and an endless wormhole. Because our discussion would be incomplete without discussing how VPD plays into this. I try following vpd guidlines first 6 weeks or so and then go bone dry at end to stress her a bit. Try to get optimal sress free growth for as long as possible, then screw growth and finish on trying to ripen her to perfection
RH at any temp would effect plants tranpiration... so RH definetky isnt obsolete measurement. l think making sure air is moving is as or more important than humidity for mold. Intuitively we all know mold in geeneral,not just growing, likes stagnant places.
This is a great topic and an endless wormhole. Because our discussion would be incomplete without discussing how VPD plays into this. I try following vpd guidlines first 6 weeks or so and then go bone dry at end to stress her a bit. Try to get optimal sress free growth for as long as possible, then screw growth and finish on trying to ripen her to perfection
Huckster79
Well-Known Member
Do any of u guys use cpd?
TherealMickey
Well-Known Member
To answer your question plainly, I see no issue with a constant 77 temp. In the summer I have trouble keeping it at 80 and don't have an issue. However, I'd be interested if your humidity actually dropped a significant amount. I kinda doubt it would.
Lord Kanti
Well-Known Member
If you want to be cool, try wearing your sunglasses at night. They also help you observe weaving and breathing of storylines. Good luck with keeping track of the visions in your eyes, however.
Lord Kanti
Well-Known Member
I'm down with the capital C-P-T
Boy, you can't fuck with me!
Huckster79
Well-Known Member
VPD I meant. Its a fascinating topic with greatly varying opinions on its importance.
My man...