MH Color Spectrum Question

The Grinch

Well-Known Member

Feb 9, 2009

• #1

Gday

Is 6400k the optimun color temp for MH in veg?

I only seem to be able find 4200k MH in my area, are these suitable?

Cheers
Grinch

 

diemdepyro

Well-Known Member

Feb 9, 2009

• #2

6400k is it. The 4200 would work. The spectrum is decent just not optimum.

 

The Grinch

Well-Known Member

Feb 9, 2009

• #3

Would i be better off veging with a 100w mh at 4200k or 100w cfl at 6400k?

Thanks
Grinch

 

diemdepyro

Well-Known Member

Feb 10, 2009

• #4

You would need to test the idea. MH has more penetration.

 

S

sirbudmaster

Well-Known Member

Feb 10, 2009

• #5

The Grinch said:

Gday

Is 6400k the optimun color temp for MH in veg?

I only seem to be able find 4200k MH in my area, are these suitable?

Cheers
Grinch

Click to expand...

it would work, i veg with 400 watt 3000K MH and have great results


Peace

 

homebrew420

Well-Known Member

Feb 10, 2009

• #6

the higher the K temp is a representation of the amount of blue light emitted by the lamp. Keep in mind that under lower light conditions a bluer light, +5000K, will still produce tighter internodal growth than a similar light with a lower K temp of the same output..

 

robert 14617

Well-Known Member

Feb 10, 2009

• #7

What is color temperature of a bulb? did you already go over this chart?

 

Jolly G' the Giant

Active Member

Feb 10, 2009

• #8

http://futuregarden.com/lighting/PAR_chart.jpg
the numbers across the bottom are the Kelvin rating.
or
http://en.wikipedia.org/wiki/Color_temperature