Treatment: Paraguard Contains A Proprietary Blend Of Aldehydes, Malachite Green, And Fish Protective Polymers Destroys Parasites,External Fungal, Bacterial And Viral Lesions. Paraguard Contains No Formaldehyde Or Methanol And Will Not Alter Ph. Safe: Paraguard Is The Only Fish And Filter Safe Aldehyde Based Parasite Control Product Available (For Parasites On Fish). Effective: Seachem'S Paraguard Effectively And Efficiently Eradicates Many Ectoparasites Including Ich And External Fungal, Bacterial, And Viral Lesions. Use: Paraguard Is Used For Treating A Variety Of Parasitic Infections Of Exotic Fish. It Is Particularly Useful In Hospital And Receiving Tanks For New Fish And Whenever New Fish Are Introduced To A Community Tank. Directions: Remove All Invertebrates From The Tank As Well As Any Chemical Filtration. Use 5 Ml (1 Capful) Of Paraguard For Every 40 L (10 Us Gallons). Repeat This Dose Daily As Required As Long As Fish Show No Stress.