|
|
|
12/08/2008, 05:08 PM
|
#1 |
|
Registered Member
Join Date: Oct 2004
Location: Atlanta, GA
Posts: 161
|
Light too high?
Hey all,
Just need some assurances here... I have a 30G hex tank with a 250W XM 20K. I recently had a canopy built, and attached the light with this parabolic reflector from www.hellolights.com. I measured from bulb to water, and I'm at 14 inches. The light seems dimmer than before (of course I had the old fixture about 8" from the water). My plan is to have SPS, zoas, xenia, mushrooms and an anemone. Just want your thoughts on the height before I modify my canopy more to lower the light. Thanks! |
|
|
|
12/08/2008, 11:27 PM
|
#2 |
|
Registered Member
Join Date: Jul 2007
Location: Olympia Wa.
Posts: 150
|
I have 400w lights and they are about 10" from the water. I do have a large fan for air circulation to keep the water from warming too much. But it seems that you could have your lights a few inches closer to the surface.
__________________
I am a traveller of both time and space, to be where I have been. Current Tank Info: 90gal. mostly SPS/30gal. sump/MRC MR-1 protien skimmer/ natural sunlight w/2X400w 20,000k metal halides/1X4'T12 420nm actinic provide light |
|
|
|
|
12/09/2008, 12:59 AM
|
#3 |
|
Registered Member
Join Date: Sep 2008
Location: Wake Forest, NC
Posts: 3,696
|
I'm with the above, 10" sounds about right.
How old is the XM bulb?
__________________
"The measure of a life is not its duration but its donation." Corrie Ten Boom “The tyrant dies and his rule is over, the martyr dies and his rule begins” -- Søren Kierkegaard Current Tank Info: ghetto grad school reef.....11g rimless tank, 36X9X9, lit by Cree and Rebels scobbled together. Stocked mostly with free stuff I got from panhandling my fellow reefers. |
|
|
|
|
12/09/2008, 06:31 AM
|
#4 |
|
Registered Member
Join Date: Oct 2004
Location: Atlanta, GA
Posts: 161
|
bought the bulb about 2 months ago... I think I may end up supplementing with some actinic and go with a 10K bulb to squeeze out some PAR...
|
|
|
|
 |
|
|
