Bill who putters wrote:
In article
,
gardengal wrote:

On Dec 15, 7:17 am, (Una) wrote:
Yup, plants in the dark *use* oxygen.

Una

I'm not sure you can say they *use* oxygen.....during the day when
photosynthesis is going on, they emit oxygen but at night when
photosynthesis is NOT active they release carbon dioxide. Not quite
the same as *using* oxygen :-) Many - if not most - houseplants are
considered to be beneficial to indoor air quality. In addition to
releasing oxygen, they also are able to filter various toxins. The
issue is the light levels during the day when photosynthesis is
active. Ideally, you would want pretty high light levels so as to
maximize photosynthesis but at night the issue is moot. Googling will
turn up various listings of plants considered being the most
efficient at improving indoor air quality; here is one to get you
going:
http://www.dannylipford.com/best-hou...r-air-quality/

Several of these are tolerant of quite low light levels so may be
more appropriate for a bedroom wher light levels, even during the
day, tend to be low. I'd include the peace lily, English ivy, pothos
and the spider plant among these. FWIW, spider plants will grow
ANYWHERE and since they are generally a hanging plant, typically
above the reach of most pets.

http://aggie-horticulture.tamu.edu/a...l/houseplt2.ht
ml

"In a laboratory test, a spider plant placed in a sealed chamber
filled with formaldehyde gas reduced the concentration by 85 percent
within 24 hours. In an average-sized house, as few as 15 plants might
significantly cleanse the air"

We have three spider plants but no formaldehyde hopefully.

And hopefully the OP doesn't have it in his bedroom.

D