It’s winter and the grow room has low humidity that for much of the day keeps it out of the recommended VPD area on the chart.
Temp ranges are 61F to 82F and RH ranges 30% to 45%. Sometimes the humidifier runs out of water while the light is off during flowering. As the temp increases, the humidity doesn’t get high enough. Humidifier is on high and set to reach 75% but never does. I’m scared to move it closer to the HPS light even though there’s a glass shield.
How important is staying in the range? This is the first grow I’ve even looked at the chart, before I only looked at temps.
Basically my humidity isn’t high enough when it gets warmer, the house RH around 20%, so the humidifier helps, but not enough.
Is using a second humidifier to raise the RH sound like overkill? Leaves look healthy so far, what happens if humidity is too low?
plants looking awesome looks almost ready or close to the end of her … no idea about your question but looks like your going to have some good smoke here soon
well once the hairs are not as noticeable take a scop and check its a preference at that point … i’m not a pro but id say a few weeks left but the girls will tell you when their ready
the hairs and leaves are usually what i look at as a general idea but i do bust out the scop and the minute i see amber i start flushing but that works for me might not be your end goal
Many people grow just fine without the charts and graphs. That being said keeping plants in the proper range with vpd leaf temps DLI and nutes allows them to grow to their potential. If youre happy with 12oz instead of a pound , or happy with 16% instead of 20 then who cares. Many here just want some weed and ill say all here get really excited about everyones grow and want to see it excell. Ifyour happy were happy. Looks good by the way
I believe you posted about this before? The discussion wemt something like dont worry about it because its an open air situation and itll be harder to control an area like that as compared to a tent you can put under negative pressure. I know @Hellraiser has said before he has grown with humidity in the 30-40s with no issues
Hey there@spacey. I had the same problem with real low humidity. I focused too much on getting it up as the outside temps went to -10F and the grow room temps fell into the 50-60F range or maybe even lower at night. I ended up with some ugly bud rot loosing about 1/2+oz of bud. I should have remembered that late flowering bud can handle dryness better than moistness. That’s what naturally happens in an outdoors grow when the dry fall weather comes.
You may be interested in my VPD discussion, even if it’s not 100% on point.
I agree that a tent (or something! Plastic sheets and pvc, shrug) would make this easier to deal with. I’m not sure you could possibly get the humidity high enough (or the room cold enough).
Hope that moisture from humidifier dont cause bud rot , low humidity is not bad in bloom , actually is better to help the buds tightened up to a harder density , as lobg as the humidiry is lower than 60% you doing good , but you never want to add moisture in the air due to the plants perspiring water vapor out the stomota , you really want to dehumidify not humidify in my opinion !
