Feed your pond fish Legacy ImmunoStimulant Food when temperatures are above 68 degrees F. Alternate feeding two supplemental foods four days per week. Due to its lower protein content you can alternate with Legacy Cold Weather Wheat Germ Food during colder weather. Montmorillonite Clay is infused and provides added minerals, which help stimulate immunity against viruses commonly found in pond environments and also acts as a toxin binder by neutralizing metabolic toxins. Additional quantities of vitamins are also blended into this food.