Seachem ParaGuard 250ml
Original price was: $12.81.$11.44Current price is: $11.44.
Price: $12.81 - $11.44
(as of Oct 15, 2025 12:12:07 UTC – Details)
ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available. 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 on fish (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. For use in freshwater or marine. ParaGuard is recommended for the treatment of certain diseases in marine and freshwater fish only. It IS NOT recommended for treating any style aquarium containing invertebrates, corals, crustaceans, or elasmobranchs (sharks and rays).
Is Discontinued By Manufacturer : No
Product Dimensions : 6.2 x 1.6 x 1.2 inches; 8.5 ounces
Item model number : 606
Date First Available : October 2, 2001
Manufacturer : Seachem Laboratories, Inc.
ASIN : B0002A5X7I
Best Sellers Rank: #40,790 in Pet Supplies (See Top 100 in Pet Supplies) #368 in Aquarium Water Treatments
Customer Reviews: 4.6 4.6 out of 5 stars 1,594 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Eradicates ectoparasites, fungal, bacterial, viral lesions
Safe alternative to formalin
For marine and freshwater use
Parasite control
Customers say
Customers find Seachem ParaGuard effective for treating ich and fin rot, while keeping fish healthy and safe for plants and shrimps. The product receives positive feedback for its quality, versatility, and value, with one customer noting it can be added to food for better absorption. The color aspect receives mixed reviews, with some customers appreciating that it doesn’t stain the water, while others mention it turns the water blue.
8 reviews for Seachem ParaGuard 250ml
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Original price was: $12.81.$11.44Current price is: $11.44.
Gena Smith –
Happy Healthy Fish
Seachem ParaGuard is a fantastic product! Iâve been using it for my African cichlids, and it has worked wonders in keeping them healthy and free from parasites. It effectively eradicates ectoparasites, fungal, bacterial, and even viral issues without harming the fish or stressing them out. I appreciate that itâs a safer alternative to formalin while still being highly effective. Plus, itâs versatile and works well in both freshwater and marine setups. Iâve seen a noticeable improvement in my cichlids’ health and behavior since using it. This is now a staple in my aquarium care routine. Highly recommended!
Amazonian –
If u suspect parasites in your aquarium, try Paraguard BEFORE strong medications
ParaGuard is an awesome aid for any fish enthusiast. I like how it can be used in the entire tank (no hospital/quarantine tanks), that it dissipates after a couple of days (requires daily additions until problems resolve), because it wont interfere with your filter media in canister or other filters, AND because it’s not a strong antibiotic thatd potentially harm other fish that arent sick.SeaChems medications such as Kanaplex or Metroplex are very good medications to use AFTER 50% water changes higher temperature or Epsom Salts, or ParaGuard seem to not be as effective 1st few days. Can be added into food for easier absorption as well or in water column to reach gills. If fish seem very sick, then these medications are the ones to use in a hospital/quarantine tank if wanting to avoid treating entire tank.All of SeaChem products are legit (I wish they paid me lol) as I’ve used them for well over 10yrs. Started off with Prime, the ONLY water conditioner aquarisuts should honestly use, GarlicGuard food supplement is extremely effective and keeps fish immunity elevated throughout life, ParaGuard for the reasons mentioned above, etc. If I had 1 brand to use for my fish, u bet its SeaChem. The good customer service is also an added bonus :)Lastly folks, feed your fish SOAKED FISH FOOD in water or Garlic Guard (soften pellets, absolutely NO HARD FOOD!) along with some peas ONCE A WEEK to avoid any SWIMBLADDER ISSUES as this event is bad for a fish that cant orient itself. Pea fiber will flush out their bladders and preventing this EASILY PREVENTABLE illness. This along with weekly 50% water changes should prevent roughly 75% of potential problems. Other 25% remains in how many fish are stocked, if all fish are compatible, etc as there are many variable to consider in aquariums inclusive of water source… that’s where my Prime comes in hehe 🙂
Reader –
Great for ick and fin rot – but usually takes 3 days to work
I get most of my fish through mail order. By the time they get to me they are often starting to show symptoms of any disease they’ve EVER been exposed to. This helps. I have successfully treated fish with ich, fin rot and body fungus.You do need to keep the treatments up, though – just putting in a dose for one day won’t be enough. The directions are to use one capful for every 10 gallons daily. “Repeat as long as required as long as fish show no signs of stress.” You can also use this as a preventative dip for new fish (which I highly, HIGHLY recommend) by putting half a capful per gallon of the dip.The good news is that not only do you not have to take the charcoal out of your filter and you do not have to worry about snails or shrimp, either. I did a heavy series of doses on one tank that had cherry shrimp in it, and not one died or even looked sick.If you keep fish, you really need to have medications on hand to treat them when something breaks out. Early treatment is key. I keep this and maracyn 2 on hand so I can nip diseases in the bud. Prazipro has a good reputation, too, but I have not tried that.Maybe there is a better broad spectrum treatment available than ParaGuard, but I have not found it yet. I would definitely like to hear people’s feedback if they’ve found something that works better.By the way, this is what the bottle says: “ParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available… contains no formaldehyde or methanol and will not alter pH… employs a blend of aldehydes, malachite green and fish protective polymers… effectively eradicates many ectoparasites (ich, etc) and external fungal/bacterial/viral lesions (eg, fin rot).”
Diego Moro Melgar –
This is a very nice medicament. I like that you must put some of it every day and doesn’t modify the appearance of the water. It is the only one that had really solved a problem until now. It solved the ICH (white spots) in just few days.
Sergio –
¡Seachem Paraguard ha sido una verdadera salvación para la salud de mis peces! Después de probar varios tratamientos para problemas de salud en mi acuario, finalmente encontré el producto perfecto en Paraguard.Lo que realmente me impresionó fue su amplio espectro de acción. No solo trata problemas comunes como ich o puntos blancos, sino que también aborda una variedad de otras enfermedades y condiciones, lo que lo convierte en un tratamiento integral para mantener a mis peces en excelente estado de salud.La facilidad de uso es otra ventaja destacada. La dosificación es clara y simple, y no tuve que preocuparme por complicados procedimientos de tratamiento. Además, Paraguard es suave con los habitantes del acuario y no afecta negativamente a las plantas, lo cual es un alivio.Lo que realmente me sorprendió gratamente fue la rapidez con la que vi resultados. Mis peces mostraron una mejora notable en su comportamiento y apariencia en cuestión de dÃas. La fórmula efectiva de Paraguard realmente hace su trabajo sin comprometer la salud general del acuario.Además, el envase es conveniente y duradero, lo que facilita su almacenamiento y aplicación. Sin duda, Seachem Paraguard se ha convertido en mi “ir a” tratamiento para problemas de salud en el acuario. ¡RecomendarÃa este producto a cualquier aficionado de acuarios que busca una solución confiable y efectiva!
PATRIZIA A. –
sono al 6° giorno di utilizzo su un guppy con problemi alle pinne (smangiate) , viene tollerato bene e le pinne sono gia’ tornate in ottimo stato, per il momento consigliato
Prajil Prakash –
Paraguard is a must have product if you’re looking for a good medicine to cure most of the fish diseases. I’m using it in a Cichlid community tank consists of African Cichlids and they’re free from ich and other diseases. After using the product for a week, they became lively and showed the signs of recovery.Please note that you need to pour exact amount of the medicine to your aquarium according to the directions as wrong amount of medicine can also be lethal to fishes.
Moeen Ahmed –
Clean my aquarium, the fish are happy and Active,