Importance of Humidity

Hi friends.

With the recent germination of three bag skunk #1 seeds, red cups with coco, my custom sprout box, a spray bottle with pH 6.5 water and a conditions meter (temp/rh), I have seen solid proof that higher humidity (above 50%) greatly benefits early developmental growth and ensures a safe and healthy sprouting.

The box I made is lined with reflective bubble material [http://img.tradeindia.com/fp/1/001/212/449.jpg].

Lighting the environment are two cfl's, connected via a y-splitter. (1) 13w 6500k and (1) 13w 2700k.

No mykos power was used at planting.

I do my best to keep the Humidity above 50% by misting the walls (reflective material), at least 4 times a day.

Temperature, low-mid 70's to high 70's.

Also in the box is a mixed green lettuce that is growing happily as well.

Slightly Damp/Warm air is the best environment for a seed to sprout, and for roots to feel encouraged to grow.

...then you have yet to have a visit from the Dampen Off angel, keep a humidity gauge in your grow place 65% is ideal, an higher you attract fungi, any lower than 40% you can stress your plant in veg

The moist heat is what makes it work.

I never really paid much attention to humidity in my grow closet for some reason, however your post made me google it up, and it seems that for vegging a humidity level of 40-70% is best. While for flowering 40-50% is the range you should be aiming for. Failure to try and keep the humidity within these limits apparently results in slower growth and eventually a diminished yield, with the added risk of mould forming, also bud rot whatever that is, but it sounds horrible.---Antway my own grow closet is only 35% humidity just now despite only watering a couple of hours ago, and Ive put a bowl of water in the grow room and see if it makes any difference. Although a simple question you posted thanks for directing my grow brain to a potential problem.

hi

i dont like humidity, and have been trying to grow my plants with as low humidity as possible 30-40% ...i dont even spray at them at all during the whole grow.
to be honest, it works quite well, no stress, plants grow well and most impotently, no fungi or anything alike.
i would advise to try it out, it wont kill your plants, it wont slow the grow. honestly, i dont see any difference. but with low humidity, u eliminate lots of unnecessary problems.

good luck!

Personally, I try to keep my main room at or around 55% rh. They can take a lot, but going to either extreme and your plants will eventually have problems. At low humidity, stomas begin closing to reduce humidity loss reducing growth, mold and other nasty shit happens above 70%. Not to mention that carbon scrubbers loose significant performance in hot, high humidity conditions. Seedlings and clones I might run a smidge hi for a week or so, but I found the key to them in bottom heat to the roots. And bud mold is awful, awful, awful! Seems to happen only to the biggest, gnarliest buds...

I remember reading somewhere in the flowering state a higher heat (80) and low humidity makes a more potent taste as it does with grapes because of the stress. And thc is a defense mechanism and when a plant is stressed in small amounts its beneficial for the quantities of the thc.

Its been nice reading the posts. Currently we are quite damp and moist in California. This had the RH up to 75% with lights off. To bring the RH back down, now at 65% and decreasing, I let the temp raise to 82f for awhile drying out the air.

I emptied a near full box of sodium bicarbonate (baking soda) into a tupperware bowl.


Prior to this RH is at 75% with lights off. Outside it is also quite humid, raining and moist, which has caused for the 25% rise in RH.


Also, I put the outtake fans ducting to the window, so all air from tent is now being displaced outside now. Was just recirculating into room that tent is in before.


Happy 420.

Yeah I'm loving the rain, but hating the 99% outdoor humidity it brought with it. Luckily I found an old box of DampRid in one of the closets. Didn't have the container to use it in so I had to mcguyver one out of a yogurt container and some tinfoil, but it seems to be working alright.

That's what I will be onto next

I have always kept my plants around 50%.
A bit more for vegetation, and a bit less for flowering.
I found the wetter air helps the plant to grow, and the dryer air helps the plant to produce oil.
The oils are a defence to help protect the plant from drying out, making the plant more potent.

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