Another light question

R

ronbo404

Registered Member
Jan 1, 2005
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Hi I was giving a 46 gal bow tank with std hood to 30w T-8 bulbs (bilbs say for marine and fresh water fish- nothing special)

I would like to keep a fish only tanks with minimal soft corals can I get away with an actinic bulb and should the 2nd bulb be a 6500, 10,000 or 20,000k bulb or should I just use tWP 50/50 bulbs.

I dont want to trash the hood I like the matched set

CONFUSED

RON
 
I would recommend 6500 or 10,000. Going higher gets into the blue sprectrum, which doesn't last as long as a daylight or a 50/50.

Go with one actinic and one daylight.

SaltTinker
 
With that lighting set-up, you will really be limited to only low light soft corals. Stick with 1 actinic and 1 daylight bulb (10,000K) -- I'm just not a fan of 50/50 bulbs.
 
Don't trash the hood (just get rid of the lights - you have a pair of 15W Marine-glo bulbs, if you have the same hood I got w/ my 46g bow).

Get a retrofit 96W PC kit from AH-Supply and make some legs to prop it up on. Then get a 96W PC 10K bulb (from elsewhere) and grow some "easy" stuff first (I think mushrooms & softies, leathers etc should be willing to grow at mid-lower levels w/ that light).

If you want to grow SPS etc, you'll want to chuck the hood and go w/ a canopy full of PCs or a MH/PC combo... and some fans.
 
Squawkbert said:
Don't trash the hood (just get rid of the lights - you have a pair of 15W Marine-glo bulbs, if you have the same hood I got w/ my 46g bow).

Get a retrofit 96W PC kit from AH-Supply and make some legs to prop it up on. Then get a 96W PC 10K bulb (from elsewhere) and grow some "easy" stuff first (I think mushrooms & softies, leathers etc should be willing to grow at mid-lower levels w/ that light).

If you want to grow SPS etc, you'll want to chuck the hood and go w/ a canopy full of PCs or a MH/PC combo... and some fans.
Click to expand...

i agree with squawkbert
 
Are kelvins/K's how much the lights warm the water? I'm confused:confused:
 
Kelvin is color temperature... has no direct impact on warming the water. It's roughly a representation of bulb color -- higher K bulbs tend to be more blue (20,000K), while lower K bulbs are more yellow / white (6,700K; 10,000K and lower).

Here's the scientific description:
http://en.wikipedia.org/wiki/Kelvin#Color_temperature
 
Ehh the funny coloured lgihts make the fish happy?....Ehhh corals feed on it?
 
What would yoru sefinition of funny be??? What do you mean by the corals feed on it??? Corals use light to photosynthisys (sp) not to feed that is what food is for.
 
So what are the effects of higher and lower kelvins other than colour?
 
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