King British Original Formula WS3 White Spot Control

King British Original Formula WS3 White Spot Control is a veterinary medicine for the treatment for fish infected with White Spot (Ich).


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King British Original Formula WS3 White Spot Control is a veterinary medicine for the treatment of fish infected with White Spot. Also known as Ich or Ichthyopthirius, this is a persistent protozoan parasite that exhibits itself as pinhead-sized white spots.Costia & Trichodina can also be controlled with this product. Suitable for both coldwater & tropical aquariums. WS3 is our strongest strength formulation against white spot – One 50ml bottle will treat up to 4,500 litres of tank water.

Active Ingredients: Malachite green (4% solution) 10.0% w/w, Acriflavine 0.05% w/w, and Quinine sulphate 0.04% w/w.

Available in a 50ml bottle.

How to use

  1. Carefully calculate the volume of water to be treated making adequate allowance for the displacement of water by gravel, rocks & equipment.
  2.  Ensuring cap is tightly sealed, shake bottle well before use.
  3. Using the pipette add 1ml  of Original Formula WS3 for every 90 litres (20 gals) of water. Use half the normal dose when adding to tanks containing sharks, loaches, & other sensitive or light scaled fish.
  4. Continue filtration during treatment but remove any filter carbon.
  5. Repeat treatment at 48-hour intervals while symptoms persist and for 48 hours after all spots have gone. White Spot can take up to two weeks to clear.
  6. After five doses carry out a 10% water change and continue with the treatment if the problem persists.
  7. A 10% water change is recommended after the problem has been terminated.
  8. Renew filter carbon.


Use medicines responsibly;

Health & Safety

Warnings: Avoid contact with skin and eyes. Wash off any splashes immediately with clean water. Wash your hands with soap and water after use. Keep away from pets. Keep away from food and drink. This product will stain if spilt. Not to be used with other fish treatments or medicines. KEEP OUTOF REACH OF CHILDREN. READ ALL INSTRUCTIONS BEFORE USE

Product reference = 17898-UK – 50658985

Additional information




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