Re: HID Grow Lighting - Best kind?

"news.east.earthlink.net" <[EMAIL PROTECTED]> a écrit dans le message de
news:[EMAIL PROTECTED]
> I am fairly new to houseplants, but I love to grow them.  I live in a NW
> facing apartment and don't receive any direct sun at all.  I have two 24"
> fluorecent grow lights lit up 10 hrs per day as well as a 10" fluorecent
> tube.  I have heard that these are much better than incondecent bulbs and
> use much less electricity.  Recently, however, I have been reading about
HID
> bulbs (HPS and MH) and really would like to invest in one.  I have several
> bromelaids, an african violet, sheflora, sansaveria, some aloe vera, a
> ponytail, lucky bamboo, a crotan, and a few others currently.  Since I
don't
> know much about them, I would like to ask some questions for someone that
is
> familiar with this type of grow light.
>
> First of all, since they are expensive, I thought I would probably just
get
> a MH bulb for now, possibly 175 or 400 watt.  Is it true that these are
the
> best overall light for growth (I have heard that HPS encourages blooming)?
> Later on in the future I might add a HPS.
>
> Second question...are all MH bulbs alike?  I can buy MH bulbs at Home
Depot
> and Menards, but are these the right kind for plant growth or does it
> matter?  Also, same with the HPS bulbs...are the menards bulbs the same as
> the ones you might buy with a grow light.
>
> Third...Where is the best place to buy the fixtures?  I have seen great
> fixtures online, but they are very expensive...like $280 for a single
> ballast and $450 for a dual ballast.  Are there outlets or lighting
> wholesalers that one can pick up ballasts relatively cheaply, because if
so,
> I would just build my own fixture.  I didn't know if anyone had ever
looked.

I have just a small experience  of growing Phalaenopsis and Saintpaulia
(african violet) 5 years ago.
Buy fluorescent tubes, they are cheaper, and quite well tolerated by plants,
and furthermore produce less heat than bulbs.
The important thing is the distance between light and plant that should be
the minimum compatible with the temperature of the tube, because light
intensity decrease with the square of the distance.
I personnally have built myself the equipment, using modular element for
library furnitures. I use a small fan activated 5  minutes every 2 hours to
avoid moisture fungi.
After I get a garden and stop cultivating plants inhouse.
Good luck.
JLP