Skip to content

SEACHEM ParaGuard 250ML


Seachem ParaGuard

Treats Fish Disease

Seachem ParaGuard is a fish medication effective against fish fungal infections, fin rot, velvet, white spot, flukes on gills and body. Fishes heal as fast as within 7 days. *

* The suggested treatment period varies according to the type of disease. Please refer to table below.

Safe Medication for Fish

Seachem ParaGuard works as a fish medication that eliminates ectoparasites, fungal, bacterial and viral lesions, all of which affect the development of fish.

It is safe for fish and bio filters, and does not pose any danger to your aquarium as compared to traditional methods of dosing formaldehyde, formalin, and methanol.


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.


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.

ParaGuard can also be used as a medicated dip. For 1 hour dips, use 3 mL per 4 L (1 US gallon) in a container separate from your main tank. Dips may be extended if the fish show no evidence of stress. Keep in mind that many diseases linger in the water as well as on the fish. Giving a fish a dip treatment does no good if they go right back into infected water.