Question: how does ick guard work?
Answer: Ick Guard® Tablets. Tetra® Ick Guard® is a soothing conditioner that quickly clears ick (Ichthyophthirius multiﬁliis), or white spot, on freshwater ﬁsh. Ick is usually the result of sudden changes in the aquarium water temperature or stress. ... Special ingredients have been added to protect ﬁsh from secondary infections.