Perlite humidification

Nan's Nook : Archives: Grow Chambers & Clean Rooms : Perlite : Perlite humidification
  Subtopic Posts Updated Creator
Perlite FAQ  -    
Perlite vs Humidifier  39 02/21 07:13am  

By Nanook of the North (Nanook) on Wednesday, October 10, 2001 - 02:16 pm:

By Poopypants (Poopypants) on Tuesday, August 14, 2001 - 08:47 am:


When I was using Perlite, I went with 1-1/2" of Perlite on the bottom of the grow chamber. Some use less - some use more... usually a point of debate, but it worked for me.

H202 mix - 10:1 ( ex. 1Lwater - 100ml H202)

Use filtered drinking water not mineral water or you'll get bad hard water stains.


By Fungivorous (Fungivorous) on Tuesday, August 14, 2001 - 06:12 pm:

What I did was soak the perlite in it's bag, drain it into a wire sieve, THEN put about 1.5" - 2" in. It is a little messy that perlite - sticks to everything - but once it's in the tank it works wonderfuly.
It may settle a little but it does not shrink.

By noMESS on Tuesday, August 14, 2001 - 06:49 pm:

why not a pillow case, place ur perlite in a pillow and fill with water, gets out all the water and keeps all the perlite no mess :)

By Kaijan (Kaijan) on Saturday, August 18, 2001 - 09:30 am:

use 1 inch of soaked, drained, perlite... it should be sufice. Sometimes when temperatures are acting up... you wont get uniform condensation on the walls.. i had floro's in my bins and no condensation was ever near them :)

By littlebro (Littlebro) on Thursday, September 06, 2001 - 12:40 am:

does anyone find an advantage to presterilizing the perlite in the oven before using it in the terrarium?

By yOur dOng (Dankboy) on Saturday, September 08, 2001 - 06:50 pm:

i have yet to have a problem with my using a similar setup....

rubber maids with about 1 1/2 inch of perlite in the bottom...

i bake it for 2 hours or so at 250deg after each flush and do add a few capfuls of H2O2 when i rehydrate it...

By Brad (Raze) on Saturday, October 06, 2001 - 05:23 am:

When using the perlite layer on the bottom, do you still need to spray for humidity? And also, do you need a drip shield thinggy?

By Brettiejams (Brettiejams) on Saturday, October 06, 2001 - 06:56 am:

Kev heard right..... perlite makes both optional and ultimately unnecessary.

May still want to mist the sides after fanning to help boost the humidity back up, but it is really a preference thing.

By Nan (Nanook) on Saturday, October 13, 2001 - 03:55 am:

I Fan three times a day (they love fresh air), and Mist before putting the covers on. I don't let the chamber walls or the Verm casings dry out. You can sprinkle water in small amounts on the verm casings too. Use good Clean Water, don't let them dry out.

By Brad (Raze) on Monday, October 08, 2001 - 04:08 am:

Ok, does perlite only work in small containers? I have a big tupperware container thats like 5000 cubic inches... is that too big? The bottom fits 12 jars nicely, but theres a lot of excess top space (like 5x too much)

By Some Body (Texasshroomer) on Monday, October 08, 2001 - 05:55 am:

I know that many people successfully use it in 10 gallon aquariums, which have plenty of head room for the shrooms. I think most put 1 1/2 inches of moistened perlite in a 10 gallon aquarium.


By Nan (Nanook) on Tuesday, October 16, 2001 - 03:29 pm:

It's a good question Brad. I would think it would work if you kept the side walls of the container Misted. Here's a link to Perlite in the Archive. Let us know how it's going.

By Lichen (Lichen) on Tuesday, October 16, 2001 - 04:08 pm:

it will work. Imagine yourself at an indoor swimming pool. It may be dry as the desert outside, but when you step inside, you can notice a world of difference in relative humidity.

It's the same with a closed bathroom that is full of shower steam...nobody can deny it's more humid in there than out in the hallway. Well, these are similar to and illustrate the mechanism of soggy perlite in the bottom of your container. The only variance is in the lid or seal. Use saran wrap to effect an airtight seal and you'll see the sides mist up and run in rivulets down into the's just the rain-to-ocean water cycle inside a tub

By Brettiejams (Brettiejams) on Tuesday, October 16, 2001 - 06:58 pm:

It'll work.... I've used fairly large containers.

I used one once that was big enough to do at least a couple of dozen jars with plenty of head room.

Changing the perlite sucked because it was so big I had to bale the perlite out and put it into five gallon buckets to clean the damn thing...... but it was too big to tote to the garbage can and just dump.

Just spray the walls after you fan/air excange it, and make sure the perlite always has a little water pooled up on the bottom when you stick your finger down there.

A tight fitting lid is essential. I just used the lid that came with it and cut a hole in the top that I covered with plastic.

Shroom Glossary