Black light over aquarium

It's fun for kicks and giggles. Spooks the fish out when
they see the corals glowing in the dark.

Wayne Sallee
Wayne's Pets



Croosh wrote on 3/2/2006 1:20 PM:
Hi people!
Couple of days ago Discovery HD channel shover a film about barrier
reef (I missed the name though). The point that got me interested was
that some corals can take available UV light and transform it into
usable wave legths.
In my tank I notticed that star polyp, which looks just yellow under
10KK MH looks flourescent-green under "deep blue" actinic. Button
polyps get nice green ring around their mouth under actinics too. (This
isn't visible under MH + actinics, and becomes really apparent when MHs
go off about an hour before actinics, and is not as prominent inthe
morning, when actinics come on before MH.
Has anyone tried to use "black light" over a tank? Is it better/worse
than actinics? Is it just a stupid idea overall?

Thank you
Yuriy

I dunno about spooking fish, but if you have ever scuba dived at
night with a good moon and the water having a lot of florescense,
there s a ton of stuff that glows like an black velvet Elvis painting,
naturally.....I sort of have my doubts that florescing corals etc
spook fish, as the UV is just a bit more pronounced on some things
than a typical moon light is. My fish show no signs of getting spooked
and I have a heap of UV (black) lights in conjunction with my lunars
which are in the 460-470 nm range.....



On Thu, 02 Mar 2006 19:37:54 GMT, Wayne Sallee
wrote:
It's fun for kicks and giggles. Spooks the fish out when
they see the corals glowing in the dark.

Wayne Sallee
Wayne's Pets



Croosh wrote on 3/2/2006 1:20 PM:
Hi people!
Couple of days ago Discovery HD channel shover a film about barrier
reef (I missed the name though). The point that got me interested was
that some corals can take available UV light and transform it into
usable wave legths.
In my tank I notticed that star polyp, which looks just yellow under
10KK MH looks flourescent-green under "deep blue" actinic. Button
polyps get nice green ring around their mouth under actinics too. (This
isn't visible under MH + actinics, and becomes really apparent when MHs
go off about an hour before actinics, and is not as prominent inthe
morning, when actinics come on before MH.
Has anyone tried to use "black light" over a tank? Is it better/worse
than actinics? Is it just a stupid idea overall?

Thank you
Yuriy


--
\\\|///
( @ @ )
-----------oOOo(_)oOOo---------------


oooO
---------( )----Oooo----------------
\ ( ( )
\_) ) /
(_/
The original frugal ponder ! Koi-ahoi mates....

Roy,
Did you see any adverse effect of those UV lights (more algae, unhappy
corals) or is it just aesthetics?
Are you using solid-state lights or regular fluorescent black tubes?

Thank you
Yuriy

You also have moon lights going at the same time.
Imagine fish seteling down for the night, and all of a
suden a black light is turned on, and the corals start
glowing :-)

Wayne Sallee
Wayne's Pets



Roy wrote on 3/3/2006 7:41 AM:
I dunno about spooking fish, but if you have ever scuba dived at
night with a good moon and the water having a lot of florescense,
there s a ton of stuff that glows like an black velvet Elvis painting,
naturally.....I sort of have my doubts that florescing corals etc
spook fish, as the UV is just a bit more pronounced on some things
than a typical moon light is. My fish show no signs of getting spooked
and I have a heap of UV (black) lights in conjunction with my lunars
which are in the 460-470 nm range.....



On Thu, 02 Mar 2006 19:37:54 GMT, Wayne Sallee
wrote:

It's fun for kicks and giggles. Spooks the fish out when
they see the corals glowing in the dark.

Wayne Sallee
Wayne's Pets



Croosh wrote on 3/2/2006 1:20 PM:
Hi people!
Couple of days ago Discovery HD channel shover a film about barrier
reef (I missed the name though). The point that got me interested was
that some corals can take available UV light and transform it into
usable wave legths.
In my tank I notticed that star polyp, which looks just yellow under
10KK MH looks flourescent-green under "deep blue" actinic. Button
polyps get nice green ring around their mouth under actinics too. (This
isn't visible under MH + actinics, and becomes really apparent when MHs
go off about an hour before actinics, and is not as prominent inthe
morning, when actinics come on before MH.
Has anyone tried to use "black light" over a tank? Is it better/worse
than actinics? Is it just a stupid idea overall?

Thank you
Yuriy

I have a combination of blue LEDs for moon lights in rthe 460-470nm
range and quite a few UV LEDS here and there to highlight certain
critters, so they are only on at night. Well they are on during the
day but the regular tank lighting over comes them so they are not
noticeable.

It does not take a lot of UV to make critters glow and stand out...

On 3 Mar 2006 07:25:53 -0800, "Croosh" wrote:
Roy,
Did you see any adverse effect of those UV lights (more algae, unhappy
corals) or is it just aesthetics?
Are you using solid-state lights or regular fluorescent black tubes?

Thank you
Yuriy

--
\\\|///
( @ @ )
-----------oOOo(_)oOOo---------------


oooO
---------( )----Oooo----------------
\ ( ( )
\_) ) /
(_/
The original frugal ponder ! Koi-ahoi mates....