I just love how Seachem doesn’t list the exact ingredients of ParaGuard. It’s another “miracle medication” that they claim works so well...yet they can’t list it on the label or in the SDS. Well, I couldn’t find it anyway. Maybe somebody else can take a look around and post up.
“IT CONTAINS A BLEND OF ALDEHYDES, MALACHITE GREEN, and FISH PROTECTIVE POLYMERS.”
Overview
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. ParaGuard™ employs a proprietary, synergistic blend of aldehydes, malachite green, and fish protective polymers that effectively and efficiently eradicates many ectoparasites (e.g. ich, etc.) and external fungal/bacterial/viral lesions (e.g., fin rot). It is particularly useful in hospital and receiving tanks for new fish and whenever new fish are introduced to a community tank.
I never trust secret fish medications.