Seachem for external fungal/bacterial/viral lesions ParaGuard 100ml
Original price was: $9.56.$7.74Current price is: $7.74.
Price: $9.56 - $7.74
(as of Oct 11, 2025 15:51:38 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 : 0.16 x 1.61 x 0.16 inches; 4.2 ounces
Item model number : 001273
Date First Available : June 20, 2004
Manufacturer : Seachem Laboratories, Inc.
ASIN : B000255R3I
Best Sellers Rank: #16,758 in Pet Supplies (See Top 100 in Pet Supplies) #138 in Aquarium Water Treatments
Customer Reviews: 4.6 4.6 out of 5 stars 1,565 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); } }); });
Fresh Or Saltwater Use
Parasite Control
Great in hospital and receiving tanks
Customers say
Customers find the water treatment effective at curing fish and appreciate its safety, ease of use, and good value for money. Moreover, the product receives positive feedback for its concentration, with one customer noting it takes very little, and another mentioning it’s safe for sensitive fish. However, the product’s lifespan shows mixed results, with some customers reporting their fish died while others say it doesn’t change water or discolor. Additionally, health outcomes are mixed, with one customer reporting their fish were healthy after one week of treatment.
13 reviews for Seachem for external fungal/bacterial/viral lesions ParaGuard 100ml
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Original price was: $9.56.$7.74Current price is: $7.74.
Nicole –
Happy Shrimp again
My shrimp did pretty well with this one. They definitely needed some help. It seems they caught something, Iâm thinking from the moss and have this white gloss on them now. This seemed to help with in days.
Evan Peterson –
Paraguard is a+ quality trusted when it comes to the fins that matter
My fishes tolerate the blue dye from this solution extremely well. The chemical compound made within the product is very effective and keeping water quality to perfect accuracy in order to maintain zero nitrate and nitire levels. Combined with good filtration and maintenence, I can attest to this product being working in keeping my Oscars healthy both visibly and my brain mentally from any stress or concern my animals may have.
Shine Like A Diamond –
A must have for receiving Discus
So just to clear things up for anyone who is unsure. Paraguard & stress guard can be used together. I recently got back into discus and in knowing how sensitive they can be I wasn’t sure what to use during quarantine. I watched a couple of videos & did some reading & reviews on line & the paraguard was highly recommended. There wasn’t anyone using it with stress guard but I figured I’d give it a try. So here is how I used it. I ordered the first 7 discus & I didn’t do as much research on the seller as I should have (I won’t mention sellers name but just believe cheaper is NOT the way to go) anyway when I got them they were skinny, doing a whole lot of rubbing and 2 had ich. That being said I turned the heat up to 92°(this high for fish who can handle high temp only) & treated with both stress guard & paraguard for 2 weeks (put temp slowly back down to 84° when done).All fish survived & are doing great. Now as for the second batch of 9 discus . They came in healthy (more reputable seller) so I did just 3 days of both. Now if you are doing a 2 week quarantine like you should if you see any trouble you can restart both until you see they are doing better (2 weeks if sick is best). Make sure you remove carbon from filter when using paraguard. If your using stress guard alone for injury you do not need to remove carbon. I hope this helps . I highly recommend both products
Tonya Robertson –
Recommend
Seems to work well. Marked improvement seen in ill betta without harm to take mates.
New York –
Seachem paraguard
Iâve been putting half a capful into bettaâs tank. The infection on tail fin seems to be drying and clearing up
Sonja M. Allen –
Good solution.
This stuff covers any bacterial or infections your fish might have. The instructions are easy to understand and it is very gentle but effective. The color is blue so it is easy to determine how much you have put into the water.
Anthony –
Nitrifying Bacteria in a Bottle
I tried many bacteria in a bottle solutions for cycling my fish tank. This is the first one that had results for me. I would test the cycle with API’s Fresh Water Test kit. If I had to cycle a tank again this would be the first thing I try
Moon –
So happy this didnât harm my fish
I purchased this early October because I noticed that my Betta was looking fuzzy, she was staying on one side of the bowl, and wasnât eating. I read one of the reviews saying it killed their fish, so I was hesitant, but decided to give it a try. I wasnât sure how much to pour, so I poured a cap full and watched her throughout the day.The next day she seemed a lot more lively. When I cleaned out her bowl again, I poured in a cap full again. After using it about three time, I noticed the fuzziness went away completely. She seems a lot happier and sheâs eating again.
Irlanda –
Excelente
Hoppala –
Balık ve diÄer tank canlıları için güvenilir olup sadece ich paraziti olmamakla birlikte genel kullanım amaçlı bir üründür. Ana etken maddesi malahit yeÅilidir. Karantina tankına gerek yok, mevcut ana tankınızda kullanabilirsiniz. Zaten beyaz benek gibi bir paraziti ayrı tedavi etmek pek mümkün deÄil. Tanktaki tüm balıklara, objelere vs mutlaka bulaÅmıÅtır. Bakterileri öldürüyor mu diye merak edenler var ise yanıt vereyim. OturmuÅ bir akvaryumdaki bakteri kolonisini yok edemez. En fazla bakterileri seyreltir. Su deÄiÅimlerinde su düzenleyici (prime gibi) ve ardından 1-2 saat sonra bakteri kültürü (stability gibi) dozlayabilirsiniz. Malahit yeÅili ne için kullanılırsa bu üründe o kadar geniÅ tedavi rolüne sahiptir. Seachem firmasıda bunu doÄruluyor. Tedavi sürecinde filtreleri kapatmanıza gerek yok. Aksine ek hava taÅı vs ekleyerek bol havalandırmayı amaçlayınız. Kısmi su deÄiÅimi üstte yazdıÄım gibi pek tabii yapilabilir. Sadece filtre sepetinizin içinden mutlaka purigen, karbon vb medyaları çıkarınız.
Brad –
Das “got to” wenn man doch mal ein Medikament braucht. Besonders wenn man Garnelen hat – ist Garnelen-sicher! Verändert die Werte vom Aquarium nicht und ist nicht so aggressiv wie andere Mittel und es zerstört nicht die ganzen guten Bakterien. Besonders empfehlenswert in Verbindung mit Stress Guard
A. P –
Must have for every fish lover. It help in eaching, fin rot, and any bacterial infection. You can used it in every 15 days to avoid any issues in fish. It is not harmful at all if your fish do not have any symptoms at all. You can use it for avoid any problem in your aquarium
Mohieddine Daaboul –
Seachem always the best