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Hello everyone, this is my first time posting here. jiofi.local.html
In a marine aquarium, blue light prevails, which filter should be used to get the corals flirting under blue light, but remove the parasitic blue. A yellow filter is advised, but under it is still white not white ...
Thank.

Hello and welcome aboard.  this article may help even though you are in an aquarium environment rather than underwater.
https://www.uwphotographyguide.com/colo ... processing

There are also filters designed specifically for underwater, they tend to be orangish.  What this does is it lets reds and yellows reproduce properly and it also brings the wavelengths of light into a range where your white balance corrections can be more effective.  You might want to experiment with manual white balance settings.  Auto white balance is simply not designed for underwater wavelengths of light and will never give you a consistent result.  But your camera in manual white balance mode and start upping the Kelvin temperature in 500 degree increments until you get close.  From there you can tweak it in 100 degree increments to fine tune it.

The problem in an aquarium is probably more related to the colour of the light source than loss of red/yellow light through water unless it's a full size tank in a public aquarium. Typically in underwater photography when diving down to a depth of 10m you can do a custom white balance off a white or 18% grey object and that is adequate to achieve good colour balance. If it's your tank you could insert a scuba diving slate or similar white plastic object in the tank and do a white balance on that . You should only have to do it once if it's home tank as the light source should remain constant.

How well it will work is most likely dependent on the CRI of the light source. Read this thread about lighting in tanks:

http://www.reefcentral.com/forums/showt ... ?t=2194214

if you have good CRI lighting then the custom white balance will be fine if not you could muck around with supplementary light or get some good CRI lighting.

Thanks guys for the valuable advice.

ChrisRoss wrote:The problem in an aquarium is probably more related to the colour of the light source than loss of red/yellow light through water unless it's a full size tank in a public aquarium. 

Very good point, I should have mentioned that!