Dipterex: (Masoten or Trichlorfon)
This is an insecticide (Organophosphorous) normally used for caterpillars and marketed by Bayer as such.
Very effective cheap treatment for Anchorworm and Fish Louse but also for Gill maggots, Gill fluke, Ich, Trichodenia, insects and all types of worms and other parasites and also used to disinfect new plants.
Can be dangerous if used in water above 20 degree Celsius . In water above 25 degrees Celsius, use a half dosage.
Can cause spinal injury if you overdose.
Dosage: 10 g / 10 000 litres (0.25 mg of the active ingredient being Trichlorfon, 0.50 mg in water above 27 degree Celsius)