The Gel version of the highly effective liquid White Lightning®. No mixing necessary For the treatment of White Line Disease, Thrush, Scratches, Rain Rot and other skin fungal infections. **Please note that there are 16 bottles of Gel in a case.** Article: Overview of Chlorine Dioxide (ClO2) Article: A Novel Therapeutic Approach for the Treatment of White Line Disease Using a Two-Part Chlorine Dioxide Gel