Condocannibus Received my seeds from CANNABIZ SEEDS soaked in paper towel 36 hours in to coco. Blue Dream photo period. These will veg for a few months in back of tent. Front of tent has 2 gorilla glue autos also from CANNABIZ SEEDS when the autos are done the blue dreams will be ready for 12/12.
I am having a hard time raising humidity. Humidifier in corner of tent full blast can't get it up above 45 percent. Temp in tent 78 4 seedlings 2x3 by 72 tall tent. It's closed up tight. Any suggestions please.
Far more problems arise indoors from maintaining a constantly high RH% compared to running at 45-50%. Potatoe, potatoe,
OH but you won't optimize vpd!!!!! Rh needs to be 60+%. Vpd is for transpirational pull, there is very little if any transpiration at night.
True enough.
But who cares how much carbon you capture during photosynthesis if your plant only converts a fraction of that carbon into usable energy for growth.
Incorporating a proper wet dry cycle in your indoor tent is far more important if you want to make it past flower.
More moisture there's in the air, the more resistance the plant encounters when oxidative phosphorylation occurs. Oxidative phosphorylation is the final stage of cellular respiration, although its a 24/7 operation its is masked by photosynthesis and is largely performed at night when the plant sleeps. This is where 90% of a plants energetic capacity comes from.
Add humidifier days only, pumping more moisture into tent at night is detrimental. Just make sure medium doesn't run out of water. Water by morning, perfect soil composition for respiration at night.
To maximize plant health and prevent disease, it is generally recommended to keep the nighttime VPD relatively close to the daytime VPD (roughly 0.8–1.2 kPa, depending on the stage of growth). This means that as temperatures drop at night, the relative humidity should also be allowed to drop to maintain a consistent VPD. RH% of 45-55% daytime will jump to 55-65% with the 10F degree drop from lights off, not to mention the plants will be spitting moisture out all night (that doesn't come from the pot). If you are getting anywhere close to 65% at night then cellular respiration practically grinds to a halt and/or is greatly diminished.
Keep her watered, add a few degrees to ambient. Add a little humidity daytime if needed. Don't fuss so much over precise vpd. Over-rated.
