ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available (for parasites on fish). Unlike highly toxic and difficult to use formalin based medications, ParaGuard contains no formaldehyde or methanol and will not alter pH.

KEY FEATURES:
Eradicates ectoparasites and fungal, bacterial, and viral lesions
Safer to dose than formaldehyde, formalin, and methanol
Will not adversely effect bio-filter