Experimenting with camera

+1. But because of that, it also affects the amount of light that the camera is able to take in. Since you can't adjust the aperature to balance it out, playing with the ISO could get tricky. You might try to adjust the white balance along with it, it might help.

 

I am running these tests with my white balance set to "Fluorescent".

After looking over those results, I'm going to run similar tests but using white balance -> manual. I believe to do this, I have to put something white in my tank and point my camera at it to say "this is white". I've familiarized myself with the setting at least I'll do that with different ISO speeds and lighting conditions too.

But so far, I am rather pleased with White -> Fluor and ISO -> Auto under actinics.

Thanks for the encouragement and comments. This is fun... though a bit tedious.