Blue lighting and our fish??

[Michael43]

do you guys think when our tank, especially leds, lighting ramps up and down that the blue tank effects the fishes sight or overall wellness? I'm always wondering if during tolhose couple hours a day with the fish always seeing blue if it's bad for them in any way. There probably isn't a definitive answer to this but am curious. I love looking at the tank in it's "blue cycles" the corals pop so much. And I, personally, leave a very light, but blue, lunar light on throughout the night.

 

[rizorido]

do you guys think when our tank, especially leds, lighting ramps up and down that the blue tank effects the fishes sight or overall wellness? I'm always wondering if during tolhose couple hours a day with the fish always seeing blue if it's bad for them in any way. There probably isn't a definitive answer to this but am curious. I love looking at the tank in it's "blue cycles" the corals pop so much. And I, personally, leave a very light, but blue, lunar light on throughout the night.

Fish are used to blue since at the depths they live in that's the dominating colour !

 

[Michael43]

Thanks. I hope so. Sometimes I feel bad like I'm adding stress to their sight or life in general

 

[rizorido]

Thanks. I hope so. Sometimes I feel bad like I'm adding stress to their sight or life in general

You're not !

 

[Humblefish]

Not sure about blue light, but I've read some fish are sensitive to polarized light.

 

[eatbreakfast]

As light travels through water, the red,then yellow, then green end of the spectrum get filtered out. The deeper you go, the bluer the spectrum of light. For many fish blue lighting is perfectly normal.

 

[Maritimer]

Keep in mind that the "blueness" of the light has a lot to do with the distance it's traveling through water, so early in the morning and later in the evening, the low angle of the sun can result in blueness creeping up into the shallower depths.

At high noon, red light is gone much below 30 feet / 9-10 meters. (Part of what made the biofluorescence of fairy wrasses so surprising - they glow in the red end of the spectrum!)

~Bruce