Malachite can be used for the treatment of minor parasitic infestations. Malachite can be used on its own or with salt as a bath treatment. Mixing Formalin with Malachite is effective at treating most other microscopic parasites.

Malachite green 2% Malachite can be used for the treatment of many parasitic infestations when used with Formalin. Malachite can be used on its own with salt as a bath treatment. Mixing Malachite with Formalin is effective at treating most other microscopic parasites. For use above 10c (50f) typical dosage 50 ml to 880 gallons.