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.
Dosing
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.
Quarantine
This is a tank set up in order monitor and medicate new fish before they go into the main tank. ParaGuard is gentle enough to use prophylactically (without visible symptoms) if needed. Quarantine times vary, but we generally recommend 2 weeks of treatment with ParaGuard to clear out any possible external infections.
Sensitive Fish
Some fish are more sensitive to medications than others. Eels, loaches, rays, sharks, and many others are well known for their sensitivity to all kinds of medications. If you suspect that your fish may be sensitive to medications, it is just fine to start with a partial dose and build up to the full dose over several days.
Not recommended for reef aquaria. As an alternative, use Seachem MetroPlex.
Treats Fish Disease
Seachem ParaGuard effectively treats fish diseases such as fungus, fin rot, velvet, ich (white spot), flukes on gills and body. Fishes are restored as quickly as 7 days for fin rots. *
* 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.
Suggested Treatment Period
ParaGuard is effectively for treating the following diseases:
| Disease | Suggested Treatment Period | |
| Ich (White Spot) | 14 days in freshwater, up to 28 days in saltwater | |
| Velvet | 14-21 days | |
| Fin Rot | 7 days or until infection clears | |
| Flukes (Gill and Body) | 14 days or until infection clears |