Koi Care Malachite Green from NT Labs treatment for fungus and external parasites in your pond.
For best results use Malachite Green along with NT Labs Formaldehyde to treat all types of fungal and parasitic infections.
If combining treatments use 10ml to every 1600l of pond water.

Symptoms of parasitic infection:

• White patches
• Fluffy white growths
• Grey slimy appearance
• Erratic swimming
• Scratching against rocks and other decor

To treat these parasitic complaints use 10 ml of Malachite Green for every 176 UK gallons of (800 L) of pond water.