Lowest Acceptable Relative Humidity 4 Indoor Hydroponics? +rep 4 citing your sources

Dipsomaniac420

Dipsomaniac420

Well-Known Member
I have a dehumidifier in my flower room, my low RH is only in my veg room.

I got an old ~30pint/day dehumidifier for $50 or something off Craigslist....its old and had to be cleaned, but it works like a horse.
 
thexception

thexception

Well-Known Member
shit I bet....I just opted for a small one (name brand eludes me offhand), just ordered online a day ago for about $50 give or take a few dollars. Should work for my space, we'll see.
 
doc111

doc111

Well-Known Member
Dipsomaniac420 said:
That's a great theory, I want to believe it....got any references?
Click to expand...
I would have to somewhat disagree with this assessment. Plant transpiration is affected by humidity. The lower the humidity, the faster transpiration will occurr. If the rate of transpiration exceeds the plant's roots ability to take up water, the plant will begin to close the stomata, thereby slowing transpiration. This is a double edged sword, however, because now the plants ability to cool itself has been diminished. At this point heat can build up in the plant tissue and the plant begins to actually cook itself. Understanding how plants work can go a long way to preventing problems before they begin. Here's a good link explaining the effect of humidity on plant growth.:weed:


http://www.jasons-indoor-guide-to-organic-and-hydroponics-gardening.com/plant-growth-and-humidity.html
 
L

l8lDANKl8l

Active Member
i have a secret jardin tent approximately 2x4x6 with a 400w hps and 8-5gal smart pots. yea i think my humidity and temps has alot to do with my rapid growth. I only had to veg my plants for 29 days and they were getting too big. It was ridiculous growth in spurts. I noticed it was usually when i played with temps and rh. I do this to simulate the outdoors(i strongly believe in organics) so my temps can be as low as 68-71 at night/ 73-80 during the day. RH in veg went anywhere from 48% to 70%. This is mainly due to the fact that i live in a dense muggy valley..the humidity outside is usually like 80%..our weather is some of the most unpredictable in the us. On top of that i couldnt afford an expensive dehumidifier so i got a little 4 and suspended it from the top of the tent. i would add/ remove pool salt, play with temps, etc and consistently change the weather on a day to day basis. I have a feeling this has alot to do with it..im fairly new to the site but im not new to biology/botany. I was thinking in terms of 1 the weather is never the same day to day so why do that when growing indoor(remember im strong organic believer; i would prefer outside actually but again with my weather..) and 2 i was thinking if i constantly change everyday then that will ensure the probability of them getting the best growing conditions possible, also making them resilient to wind, temp drops, humidity changes whatever. Basically they have all the weather they need lol
 
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