Repashy RedRum Carotenoid Supplement gel premix is designed to be mixed with our freshwater and saltwater formulas. Supplementing carotenoids can restore natural coloration in specimens that have been feeding on a deficient diet. Typical inclusion levels would be about 10% of the diet, but the product can be used at higher levels, or even fed whole when being used theraputically. This formula is based on our famous "Superpig" with added Whole Krill for palatability, as well as our seaweed based gelling ingredients.