how long do lights last

swampdonkey.ie

Active Member

• Nov 29, 2008

• #1

iv a 400 hps light can any1 tell me how long thay last ,,how meny grows ??


cheers


anto

 

Boneman

Well-Known Member

• Nov 29, 2008

• #2

You should be able to get at least 2 full grows out of any HID bulb. Hopefully more

 

swampdonkey.ie

Active Member

• Nov 29, 2008

• #3

never heard of hid ???

 

Boneman

Well-Known Member

• Nov 29, 2008

• #4

High intensity discharge = Mercury Vapor, Metal Halide, High Pressure Sodium etc...

 

Hairy Bob

Well-Known Member

• Nov 29, 2008

• #5

Bulbs can have a theoretical lifespan of 5 years+, but the amount of lumens it puts out will gradually decrease over this time. Best to change it once a year to keep your growroom at peak efficiency.

 

swampdonkey.ie

Active Member

• Nov 29, 2008

• #6

will keep my eye out for them ,,a they better than hps

cheers

anto

 

SmokeyMcSmokester

Well-Known Member

• Nov 29, 2008

• #7

My last 150 HPS bulb went bad within like 2 months...The light would look white..Lost its golden glow. It could've been a defective bulb

 

Hairy Bob

Well-Known Member

• Nov 29, 2008

• #8

In a word, No. HPS are the most efficient lights, followed by MH, then MV.
HPS are more suited to flowering, as they put out the red end of the spectrum that plants use during this stage of their life. MH and MV give off more of the blue light that plants need during their vegetative stage.