Humidity and General advice

SBBCal

SBBCal

Well-Known Member
Yup, if the ir gun is correct. That's why higher temps while using LED is bueno. Mine is usually -2 or -3 difference. How far are your lights away? And what light? Watts?
 
SBBCal

SBBCal

Well-Known Member
If this is your first grow I wouldn't worry too much about sticking 100% to that chart. It's more of a guideline to keep you on track. Not being in the "zone" isn't going to kill your crop
** unless your way off
 
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GanjaDudeLV

Active Member
SBBCal said:
Yup, if the ir gun is correct. That's why higher temps while using LED is bueno. Mine is usually -2 or -3 difference. How far are your lights away? And what light? Watts?
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running 2x 240 watt qbs at 21inches from top. I just checked again and its around -6 for the very tops of the plants
 
SBBCal

SBBCal

Well-Known Member
1.2 and up from here on out imo . The heater should def help lower rh and raise vpd . Then you'll notice your plants drinking more. Then late in flower they slowwwww down of water frequency
 
SBBCal

SBBCal

Well-Known Member
Usually 5-8 degree swing. If the range is too far (cold) you may see some purpling.. some do that intentionally, others wait until the last 2 -3 weeks to drop temps. Glad I could help, I'm sure you'll get more opinions. :joint:
 
Cabrone

Cabrone

Well-Known Member
SBBCal said:
Most defol before flip and at 21 day mark. I wouldn't worry about herms w/ defol. That's more environmental imo.
with your temps on the low side, that rh is acting higher than its reading. Look into VPD. Vapor pressure deficit , here's one I use.
vpdchart.com

VPD Chart

Vapor pressure deficit (VPD) chart & calculator for horticulture in controlled environment. Cannabis, tomatoes, leafy greens, cucumber.
vpdchart.com vpdchart.com
- if you raise temps to 79-81 (if using led, 81 is good) the RH will drop on its own. If you lower temps more the rh will rise faster and easier. I'd look into controlling the temp/rh for the room , then you'll see a difference inside the tent. But yeah defoling now will help, and help your buds
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Thank you, this chart is awesome.
 
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GanjaDudeLV

Active Member
SBBCal said:
Did that heater help?
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Yeah everything is sitting pretty right now and I'm able to keep the humidity down and the temp where I need it. Thank you so much for all your help. Ill post some new pictures tomorrow but the progress is going well
 
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