RH ?

osowhom

Well-Known Member
whats the best RH for the first 2 weeks of flower i start tonight at 8:40 thats 4:20 times 2 lol
 

Stoned Whale

Active Member
Look up a VPD chart because ideal humidity really relates to temperature.

If you aren’t in a sealed room with complete control of environment. Don’t worry too much about it. Try not let it go below 40%.
 

Star Dog

Well-Known Member
What I new as relative humidity chart appears to be called vpd now?
Anyway 50/60% 25c give or take a few points and you won't go far wrong.
Normally it's difficult trying to keep moisture when the plants are small but it only last a short time, it's not a problem but worth keeping an eye on.
 
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