alexmuw;4420222; said:Most "color enhancers" are just organic pigments. Organic pigments are usually poly-allylic, poly-cyclic or aromatic carbon compounds that absorb photons in the visible spectrum of light, and "pass" electrons around (hence the "anti-oxidant" properties: neutraizing free radicals".
Thus, like ASTAXANTHIN, you should be able to use any foods with pigments (pigments in spirullina algae, or anything in the red-orange spectrum if that's what you want. Beets, etc...). I have given my Blue Dolphins lots of spirulina, and have given cooked organic beets (leftovers from dinner) to my fish. Maybe can even soak fish food in beet juice? I might go try that!!!
The reason I have been trying to incorporate astaxanthin into their diet is its supposed concentration. More bang for the buck. It always comes down to ease of use- if a pellet that the fish will accept has good colorenhancing qualities I would rather use it than run the risk of fouling or discoloring the tank.