hps light hieght effieciency chart

I

igotpron

Member

• Jan 7, 2006

• #1

ive tryed searching and i cant find the chart of hps with all the possible wattages and the lumens you loose by height. maybe ima dumb ass, but i somehow deleted all my bookmarks and i would really like that link back..
thank you to ever helps me out.

 

G

Guest

• Jan 8, 2006

• #2

http://www.overgrow.com/growfaq/983

 

sunnyside

Plant Manager

Veteran

• Jan 8, 2006

• #3

bump...ill get that info for you tomorrow when MY EYES ARENT BURNING!!! check back with me lol

 

G

Guest

• Jan 8, 2006

• #4

 

G

Guest

• Jan 8, 2006

• #5

Damn, I thought I was a hero by posting the link to OG, but you guys really pulled it off!!! Nice work!

 

guineapig

Active member

Veteran

• Jan 9, 2006

• #6

invaluable information from a couple of kind souls.....

now, should this chart come with a footnote which points out
the possible existence of "hotspots" which can occur even if
you are using a light-rail? So even if you follow these guidelines
it always helps to be very observant and watch out for
any plant tissue damage just in case...

gp

 

Last edited: Jan 9, 2006

P

potdistiller

Member

• Jan 21, 2006

• #7

my own experience is: 18 inches away to avoid burn from a metal halide, and 12 inches away for a hps, now as the plants acclimate to the bright lights, then you can slowly bring them closer.

 

E

EverLast

• Jul 17, 2006

• #8

Can somebody here post again this chart?

 

MTF-Sandman

OG Refugee

Veteran

• Jul 17, 2006

• #9

EverLast said:

Can somebody here post again this chart?

Click to expand...

Why? It's already posted. Right click it and select "Save Picture As" if you want to save it locally.

 

E

EverLast

• Jul 18, 2006

• #10

Sorry yesterday my browser didn't load the chart 10x.

 

bostrom155

Active member

• Jul 18, 2006

• #11

Can someone tell us the signifagance of it being in foot-candles?

 

MTF-Sandman

OG Refugee

Veteran

• Jul 18, 2006

• #12

It's just a standardized unit of measurement for light that is fairly universal. PAR would be much better, but it varies so significantly with each brand and model of bulb that it would be pointless.

I wouldn't mind finding a complete PAR chart for all the current bulbs...that one on OG was incredibly outdated and was missing lots of info.

Anyone got a PAR meter and want to do some testing