Inexpensive nano lighting

TheReefGeek · #1 03-16-2006, 07:09 PM

You are happy with it? How long has it been setup?

You still haven't answered what color spectrum those are, it would be helpfull for those reading this post and considering those lights to know what the spectrum of the bulbs is.

Willow · #2 03-16-2006, 07:10 PM

Quote:

Originally Posted by TheReefGeek

You are happy with it? How long has it been setup?

You still haven't answered what color spectrum those are, it would be helpfull for those reading this post and considering those lights to know what the spectrum of the bulbs is.

looks pretty low, around 6k

targa81 · #3 03-16-2006, 07:33 PM

The LOA quad is 6500k. I'm considering adding it to my nano but I'm wondering if it will look too yellow.Since I would be adding to one 10000k PC I'm thinking the combo would be ok. BTW I've read that coral growth is best at this spectrum,that is 6500k.So are the LOA lights yellow from anyone using them?

AC33 · #4 03-16-2006, 07:35 PM

I was under the impression that the proper spectrum was around the 6k region, the colour temp closest to the sun? And that we only use higher K bulbs because they are more visuallly appealing, but dont offer the same amount of growth as 6k bulbs?

TheReefGeek · #5 03-16-2006, 07:39 PM

Quote:

Originally Posted by AC33

I was under the impression that the proper spectrum was around the 6k region, the colour temp closest to the sun? And that we only use higher K bulbs because they are more visuallly appealing, but dont offer the same amount of growth as 6k bulbs?

Different wavelenths of light penetrate the water more/better. So as you go deeper, only certain wavelengths are present, or in high concentrations. So corals are not exposed to 6K sunlight, they get "filtered" light, with higher concentrations of blue light because it penetrates the water better.

So higher K lamps are used for coral growth, and visual appeal. Different corals, depending on where in the reef they are, will "want" different spectrums of light. They can also adapt though, and change out the symbiotic *cant remember name* and get food from different spectrums of light.

Murminator · #6 03-16-2006, 07:54 PM

Hey Bob is that you little tank?.....looks good

Bob I · #7 03-16-2006, 08:07 PM

Quote:

Originally Posted by Murminator

Hey Bob is that you little tank?.....looks good

It is Red Sea wave tank. Kind of cute, but only 2.5 gallons. It probably won't be set up for very long. That is why I only used inexpensive lights.

TheReefGeek · #8 03-16-2006, 08:46 PM

Quote:

Sunlight at noon at the equator is 6400K, so I believe daylight bulbs are around 6500K

Yes, that is why they call them daylight bulbs, but this is not necessarily the "proper" spectrum for corals and fish because they are underwater, not on the surface of the planet at the equator.

StirCrazy · #9 03-17-2006, 04:09 AM

Quote:

Originally Posted by TheReefGeek

Different wavelenths of light penetrate the water more/better. So as you go deeper, only certain wavelengths are present, or in high concentrations. .

True

Quote:

Originally Posted by TheReefGeek

So corals are not exposed to 6K sunlight, .

False

Quote:

Originally Posted by TheReefGeek

they get "filtered" light, with higher concentrations of blue light because it penetrates the water better. .

true but nit relevant in our tanks

Quote:

Originally Posted by TheReefGeek

So higher K lamps are used for coral growth, and visual appeal. Different corals, depending on where in the reef they are, will "want" different spectrums of light. They can also adapt though, and change out the symbiotic *cant remember name* and get food from different spectrums of light.

Both true and false.. (low K is better for growth than high K but some people think high K brings out colors better), Besides this is a thread about Bob's cheap lights he found that actually look decent. If you want to know more do a search on light spectrum, lots and lots of good information

Looks good Bob.

Oh and sense Bob didn't pick it up "spectrum" is already a plural so you don't need the "S" on the end..

Steve

TheReefGeek · #10 03-17-2006, 02:30 PM

Steve, a question for you.

I know say 6500K iwasaki bulbs have great PAR, but do you know how much of that PAR gets to the bottom of a 30" tank compared to a 20K bulb?

The blue in the 20K should penetrate better, but I don't know whether 30" will make a difference or not?

And lower K is not always higher PAR. 20K XM bulbs put out more PAR than 15K XM bulbs, just wanted to point that out.