If you can turn off your actinics, do so, and just run your daylights.
If your camera has an adjustable white balance, take something white (we use the white lid from a prescription drug vial on a stick) and put it into the tank with the intended lighting, then adjust the camera's white balance so it "knows" that the lid is white.
You can also do a bit of color adjustment using an image processing program (Photoshop, Paintshop, etc), but that's a bit tuffer to do if you're not good with the software. Then again, that's the beauty of digital images...they can be changed easily and there's always the "undo" button.
HTH