Is this a good source of light?

Im not sure if its any good.

all i know is its used for tanning indoors, old school. Mercury Vapor lamp..

:confused:
http://img178.imageshack.us/img178/8276/light8pw.jpg

They are sometimes used, however aren't really used since metal halide and high pressure sodium are much better. Get one of those or flourescent (flourescent doesn't perform as well.)

so is it bad, how about that and a fluerecent at the same time, i have two 4 FT. Fluerecents.

Lamp Type ....................Watts.... Lumens/bulb ....Total efficiency
Fluorescent Bulb ..............40................3000........... 30k lumens
Mercury Vapor................ 175.............. 8000 ............20k lumens
Metal Halide................... 400 ..............36000 ...........36k lumens
High P. Sodium ................400.............. 45000........... 45k lumens



Notice the Mercury Vapor lamps are less efficient than the fluorescent (FL), and can not be positioned as close to the plants, so the plants will not be able to use as much of the MV light. The light distribution is not as good either. MV lamps simply are not suitable for indoor gardening.

Good luck and have a good grow!:thumbsup:

well it made the room a looot warmer way faster. and its a closet, but its warm enough. the light just makes it 5-7' warmer if i leave it on

No one has said anything about LPS. MV arnt all that good, no one really uses them. Get a HPS, you'll get alot better yeild wise.

they do make phosphor coated mercury vapor bulbs, raises the color from 5900k to 4000k (still not ideal, but quite a bit more red).

you might look in to a cfl conversion replacement bulb
good luck

envirolites are a good cfl bulb im using them and they are quite nifty really
they come in 2 sizes and 2 colours
125w and 200w
blue spectrum for vegging
and red spectrum for flowering
and as an added bonus they are self ballasted
check this link out www.envirolites.co.uk
cheers all :)

Quote:

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Originally Posted by hahaitsdoogle

well it made the room a looot warmer way faster. and its a closet, but its warm enough. the light just makes it 5-7' warmer if i leave it on

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switch the mercury bulb for a halide bulb of same wattage

the thing is acient tho? where could i find a replacement.

home depot has a shit load of bulbs to choose from look at the yard buster 200 watt replacement 15.00 bucks but its a cfl ? your choice
good luck

MH or metalarc bulbs don't work in my mercury fixtures/ballasts, (tried a few) is there a conversion? Not that my MV fixtures don't make fat buds, it would be nice to use metalarc, that's all.

on that im not sure but if you search the web you can get an mv to hps conversion for about 50 bucks good luck

I'll stick with MV, $50 will buy 3-4 coated MV bulbs, or 2 more MV fixtures with bulbs. Either way my floro and mv setup works quite well, compared to my first few done with just floros.

good luck let us know how ya do