Feed above 68°F (20°C). Alternate feeding the two supplemental foods every other day (four days per week). Due to the lower protein content this can be alternated with the Cold Weather formula during colder weather as well. The Montmorillonite Clay provides additional minerals which help provide more immunity against viruses commonly found in pond environments. Additional quantities of vitamins are also blended into this food. Montmorillonite Clay also acts as a toxin binder by neutralizing metabolic toxins.