I have a lobo that I've had for ~4 months. It seems to be very healthy and eats mysis/spirulina brine about 1x per week.

When I bought this it was a pink bottom with a light blue center. However, the light blue center has been gray pretty much from the day I got it.

Any hints on how to get that color back? Too much light? Not enough light? Not enough feeding?

Any help is appreciated!