Skunkworkz
New Member
Lol there has been so much rain. My humidity has been on an average of almost 75 for about 2 months. I do not have the electrical capacity to run a dehumidifier as it's an old glass 15 amp fuse my entire grow runs on. Hence the big renovation plans for spring.
But seriously I don't know how to drop it. I pull air from outside. Have no way to exhaust out either. Until spring......
A friend in the northeast has been essentially underwater with assed humidity all friggin' summer. At 70+ RH your odds of bud rot @ end of cycle is approximately 99%.
If you're pulling in 70%RH air, you can't easily control RH downward. And I'd say "add heat" to dry the air but if you could power heat you could power a dehumidifier.
Here's an article I found about DIY humidity reduction, maybe some of it will be useful. .
Charcoal Briquettes
People swear by charcoal briquettes for removing humidity. There is no particular brand you should use over another. Charcoal not only dehumidifies the air, it also removes odors. Perfect for my room. I bought a cheap bag of charcoal at the dollar store and filled an inexpensive basket. That was placed on the top shelf in the closet area. I'll see how well it works.
The charcoal will last for 2-3 months. After that, they can be used in a barbeque without infusing the food with any weird taste. One product, multiple uses.
Rock Salt
Rock salt is well known for being a desiccant. Gather two plastic tubs the same size. In the bottom tub, place something inside to hold the first tub off the bottom. In the top tub, poke holes in the bottom. Fill with rock salt and place inside the first one. You will need to check the bottom tub daily and empty the water. It can take several days for the tub to fill.
I've used rock salt since I was a teenager. I have no idea who invented it. My Grandfather told me about it. He was born in 1910 and heard about it from his father.
Using Commercial Products
You can build the above dehumidifier and choose to fill it with a different desiccant. A small paint bucket with a cheap plastic strainer for the top works just as well.
Two commercial products are Dri-Z-Air crystals and Damp Rid crystals. I have used Damp Rid before. Many years ago, a pipe behind my refrigerator developed a leak. It wasn't until the house stank like mold that the problem was found by a handyman I had hired to find out what was wrong. It removed moisture by the bucket load and is relatively inexpensive. I am not paid by the company for my opinion. It also removes some of the smell.
There are other commercial products available. Research each closely before making a purchase. Some are available only to businesses. The two above listed products are found at grocery, big box and online stores.
Source: The author of this article has over 40 years of experience in diverse forms of DIY, home improvement and repair, crafting, designing, and building furniture, outdoor projects, RV'ing and more.