NT Labs Koi Calm Ref: 108 Description •Reduces Fish Stress •Calms the Fish when being Treated or Inspected •Gentle Sedative Koi Calm is a gentle sedative designed to calm the fish down so that it can be handled easily for topical application of Ulcer Swab and Wound Seal. Using NT Labs Koi Care Koi Calm helps to slow the fish down, reduce stress and allow inspection and repair work to be carried out. 30 ml treats 300 litres (66 gallons)