Question about lighting, Advice needed

KING_BONG

Active Member

• Jun 23, 2007

• #1

Hi everyone

iv just brought a 400w hps grow lamp with built in ballast, aluminium casing

and ceramic buld holder iv paid £55 and it also comes with 2 orange spectrum bulbs. Iv

added a picture of it but wanted to know am i also able to use Metal Halide bulbs as

well as the hps bulps on my lamp and what is the 2 orange spectrum bulbs

for and how may plants would i be able to grow under 400 watts and should i

also throw in a few fluorsent lights on the side . My grow room is width 4ft 3

inch X 3ft 4 inch depth and 8ft height.

thanks for any help

 

Attachments

• 
  1f94_1.jpg

  24.3 KB · Views: 29

dursky

Well-Known Member

• Jun 23, 2007

• #2

Hey because you have a unit that has a bilt in ballast you are going to have alot of heat... you will have to vent it well. I would say 6 plants.... depends on veg time.

 

LadyJane

Active Member

• Jun 23, 2007

• #3

It has been my experience that many ballasts accept either HPS or MH type bulbs, but I have heard of ballasts that will accept both. However, without knowing the exact model number of your ballast, I couldn't say with absolute certainty that your ballast is the latter type.

 

KING_BONG

Active Member

• Jun 23, 2007

• #4

my lamp arrives on wed so ill be able to post more details and thanks for the replys so far

 

T

Tokecrazy

Well-Known Member

• Jun 23, 2007

• #5

It should be labled MH only. HPS labled only HPS.The ones that light both are labled HPS OR MH.But not knowing the model or the maker I would not be able to say.PEACE

 

KING_BONG

Active Member

• Jun 25, 2007

• #6

hi.... got my lamp today and its type is PL/ 780/N400/240 volt, so any ideas if i can use a MH bulb with it

thanks

 

T

Tokecrazy

Well-Known Member

• Jun 27, 2007

• #7

Who did you buy it from.Check there web site and see what it say.PEACE

 

KING_BONG

Active Member

• Jun 27, 2007

• #8

i brought it off ebay and the person who i brought if of wasnt sure....never mind, what price should i be looking at to pay for a mh lamp

thanks