Unless you have a sealed-off, isolated growing area, humidity trays are of
little benefit beyond catching overflow when watering.

Evaporation and the laws of physics want to spread those vaporized water
molecules throughout the enclosed space - be it a room or your whole house.
Add fans or other sources of air movement and any potential gradient is
greatly reduced.

If you are lucky enough to really get a benefit, a combination of
fluorescent light grids and standard nursery trays is far more economical.

--

Ray Barkalow - First Rays Orchids - www.firstrays.com
Plants, Supplies, Books, Artwork, and Lots of Free Info!

.. . . . . . . . . . .
"disy" wrote in message
.net...

"tbell" wrote in message
...
I use Humiditrays, by CMI Plastics of Cranbury, New Jersey, USA. They
are
2"
deep, molded plastic trays with removable grid tops. Found them at a
local
orchid store. I like the grid tops better than gravel, because they
don't
get crudded up with mineral scale.
Saw a suggestion for a similar set-up, using plastic "egg crate"
intended
for fluorescent lighting, which can be cut to fit trays of any sort.

Tom
Walnut Creek, CA, USA
Nikon Coolpix 5700
(To reply by e-mail, remove appendix)


I have similar sounding ones from

http://www.charleysgreenhouse.com/ca...l2Display&Cate
goryId=291,
this catalog has different sizes.

Diana








From: "M&M"
Organization: Alphalink (Australia) Pty. Ltd. Network News
Newsgroups: rec.gardens.orchids
Date: Mon, 18 Aug 2003 11:07:46 +1000
Subject: Humidity trays

Hi I am wanting to set up a humidity tray for my orchids which are
positioed
on a bench below a skylight in my bedroom. I need a tray about the
size
35cm * 80cms to asccom approx 8-9 plants. Does anyone have any ideas
on
what I can get to use about this size, I haven't noticed anything this
big
in the garden centres.

Thanks.