Natural syklight

lion_crazz

Active Member
I think it would look pretty cool if you can control the possible algae growth. A well-maintained refugium and pure water will help you do that, though. Murph has a picture on here where direct sunlight hits his tank for like an hour or so everyday and it is amazing how nice the sunlight lights his tank up.
 
I have been looking into the same thing. I want to build a wall tank and thought the same here. I have found that alge grows best from a spectrum of light that is ...I think......yellow/ red. Anyway it is one of the colors the sun gives off at about 4500k. From the same understanding the corals will grow better because they will recieve a full spectrum light throughtout the day starting at about 3000k and ending at around 24000k depinding on where you live. They have a tub you can use even to direct the light into your tank so you don't lose any of it intensaty.
 

scsinet

Active Member
Originally Posted by Hurt
I'm curious to hear why people feel NSL will cause nuisance algae?
While natural sunlight on it's own doesn't necessarily cause it, almost all captive systems have DOCs and other nutrients in above-natural levels that, with combined with enough light, can cause it.
Still though, if you have the means it seems like a great idea... certainly energy saving if it negates the amount of electric lighting needed. The only real drawback is that your tank's lighting hours have to cooincide with what's outside.
 

hurt

Active Member
While natural sunlight on it's own doesn't necessarily cause it, almost all captive systems have DOCs and other nutrients in above-natural levels that, with combined with enough light, can cause it.
That was my point, the bulb itself doesn't cause nuisance algae, phosphate/nutrients do. NSL is what corals in the wild work with of course, granted their depth in the ocean filters out certain spectrums, but that only occurs when you start to get deep where most of our corals don't grow. Organic's/nutrients of any measureable level in any system/with any bulb will promote nuisance algae.
And an Iwaski 6700K is equivalent to sunlight at noon, and of course it grows corals like no other bulb will.
The following tank is by far and away the best looking tank I have ever seen, and it incorporates NSL.
Google: Pieter van Suijlekom's reefkeeping
 
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