
Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Streaming of thousands of movies and TV shows with limited ads on Prime Video.
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
Buy new:
$21.69$21.69
Ships from: Amazon.com Sold by: Amazon.com
Save with Used - Like New
$16.75$16.75
Ships from: Amazon Sold by: Amazon Resale

Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
-
-
2 VIDEOS
-
Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Purchase options and add-ons
Brand | Seachem |
Liquid Volume | 16.9 Fluid Ounces |
Item Weight | 454 Grams |
Item Form | Liquid |
Target Species | Fish |
About this item
- Bulk Pack Convenience: Includes three 500ml bottles for extended care.
- Fish and Plant Safe: Ideal for use in both freshwater and marine aquariums.
- Non-Invasive Treatment: Helps maintain aquarium balance without harsh chemicals.
- Supports Aquatic Health: Assists in fostering a healthy environment for aquatic life.
Frequently bought together

Videos for similar products
From the manufacturer

ParaGuard
Eradicates ectoparasites and fungal, bacterial, and viral lesions
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.
Product Description
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).
Videos
Videos for this product
0:32
Click to play video
Product Overview Video
Amazon Product Imaging
Videos for this product
0:42
Click to play video
Best Way to Treat External Fish Diseases #aquarium
Cichlid Bros
Looking for specific info?
Product information
Item Weight | 1 pounds |
---|---|
Department | Unisex-Adult |
Manufacturer | Seachem Laboratories, Inc. |
ASIN | B002DWTIU6 |
Country of Origin | USA |
Item model number | 603 |
Customer Reviews |
4.6 out of 5 stars |
Date First Available | June 21, 2011 |
Item Package Dimensions L x W x H | 7.56 x 2.36 x 2.36 inches |
Item Dimensions LxWxH | 2.44 x 2.44 x 7.62 inches |
Item Weight | 454 Grams |
Brand Name | Seachem |
Target Audience Keyword | algae-eaters, bottom-feeder-fish, mollusks, goldfish, octopuses, snails, fish, cichlid-fish, sharks, rays, invertebrate-fish, betta-fish |
Directions | 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 times vary, but we generally recommend 2 weeks of treatment with ParaGuard to clear out any possible external infections. |
Country of Origin | United States |
Warranty Description | Warranty |
Model Name | Seachem ParaGuard 500ml Bottles (3 Pack) |
Color | blue |
Size | 500 ml/ 17 fl. oz. |
Material | Plastic |
Age Range Description | All Life Stages |
Number of Items | 1 |
Manufacturer | Seachem Laboratories, Inc. |
Included Components | Seachem ParaGuard 500ml Bottles (3 Pack) |
Specific Uses for Product | Active |
Feedback

Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603
Share:
Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.
Where did you see a lower price?
Fields with an asterisk * are required
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 2.44 x 2.44 x 7.62 inches; 1 Pounds
- Item model number : 603
- Department : Unisex-Adult
- Date First Available : June 21, 2011
- Manufacturer : Seachem Laboratories, Inc.
- ASIN : B002DWTIU6
- Country of Origin : USA
- Best Sellers Rank: #16,885 in Pet Supplies (See Top 100 in Pet Supplies)
- #141 in Aquarium Water Treatments
- Customer Reviews:
Top Brand: Seachem
Important information
Directions
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 times vary, but we generally recommend 2 weeks of treatment with ParaGuard to clear out any possible external infections.
Compare with similar items
This Item ![]() Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603 | Recommendations | |||||
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $21.69$21.69 | $17.99$17.99 | $16.29$16.29 | -28% $11.49$11.49 Typical: $15.94 | -12% $18.23$18.23 List: $20.80 | -34% $9.19$9.19 List: $13.90 |
Delivery | Get it as soon as Friday, Mar 14 | Get it as soon as Monday, Mar 17 | Get it as soon as Friday, Mar 14 | Get it Mar 14 - 20 | Get it as soon as Friday, Mar 14 | Get it as soon as Friday, Mar 14 |
Customer Ratings | ||||||
Sold By | Amazon.com | FREE 3 DAY ARRIVAL SHIPPING | Asavvysavers | Kens Fish | Amazon.com | Amazon.com |
target species | Fish | Fish | Fish | Fish | Fish | Fish |
liquid volume | 16.9 fluid ounces | 250 milliliters | — | 250 milliliters | 500 milliliters | 250 milliliters |
form | Liquid | Liquid | — | Liquid | Liquid | Liquid |
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find that the aquarium pond water treatment is effective and safe for fish. It works well, keeping fish happy and healthy. They also mention it doesn't harm plants or snails. However, opinions vary on whether it offers good value for money.
AI-generated from the text of customer reviews
Select to learn more
Customers are satisfied with the product's effectiveness. They mention it works well for ich and molds, but some fish may not be completely free of ich.
"...The combination of Paraguard and salt dips worked wonderfully!..." Read more
"...This is the treatment plan I followed and it worked very well, no more melafix/pimafix/jungle fungus clear for me:..." Read more
"This is an amazing product and I cannot be happier with it...." Read more
"...I give it 4 stars because it works really really well...." Read more
Customers are satisfied with the product's effect on fish health. They say it helps their fish get better, and they don't lose any shrimp or fish. The product seems to stress out the surviving fish, but it doesn't seem to cause issues for the remaining fish. Many customers find it effective on external parasites like ich and velvet.
"...I did not lose any shrimp or fish and I see many juveniles and newborns) and nobody showed any signs of stress...." Read more
"...started it on paraguard, and two weeks later, the infection is almost completely cleared up and the fish is thriving...." Read more
"...However the fishes were healthier and behaved more regular, I did not see further improvement. On the following Tuesday, I received the good..." Read more
"...Anyways, metronidazole is a real medication that people take to treat yeast infections which can also resolve parasitic problems for bettas, aka "ich..." Read more
Customers appreciate the product's safety for plants, snails, and fish. They find it doesn't discolor the tank, doesn't harm invertebrates, and is safe for non-sick fish. Some customers say it hasn't caused any deaths in the community tank. The product doesn't ruin biological filtration and is gentle on their fish.
"...I was very pleased with this product. Seemed safe and complete. It seems to have saved him and I am so grateful...." Read more
"...I can also vouch for its safety regarding inverts and sensitive fish if dosed into the water...." Read more
"...Now not everyone who reviews it finds that it does not hurt plants. I have five Amazon swords. They are doing well...." Read more
"...malachite green it wont hurt plants or crustaceons because its not toxic...." Read more
Customers have different views on the value for money of this product. Some say it's worth getting and their fish are doing amazing, while others say it's a waste of money, expensive, and not worth using if it stresses their fish out.
"...Easy to use and my fish are happy and healthy. Worth every penny!!..." Read more
"...Can get pricy if you need to treat a large aquarium. Lesson learned, never go without quarantining new fish...." Read more
"...It really is the best value for money and my fish are doing amazing. Ich was gone in 2 days and never spread." Read more
"Very slow acting and very expensive what does do the job did get rid of a foot problem I had as well as an internal parasite problem a guppy had" Read more
Reviews with images

I made it worst when I tried reducing salt levels which were likely ...
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
- Reviewed in the United States on July 31, 2017I used Seachem Paraguard to treat scutariella on yellow shrimp in my 10 gallon. I know that this product has not been tested (per Seachem website) with invertebrates but I had tremendous success! Background on the tank: 10 gallon, inhabited for six months, 12 espei rasbora, 7 asian moth catfish, 1 ghost shrimp, 5 amano shrimp and 25-30 yellow neocaridina shrimp of various ages and stages (juveniles, adults, berried females and some teensy newborns). I removed the carbon from the filter and dosed everyday for two weeks. Water changes stayed current (1-2 x per week of 15-20%). Not all of the yellow shrimp had scutariella, I counted roughly 6 but those six visibly had signs on their rostrums and heads. Within the first couple of days of treatment, I saw immediate improvement. After a week, I only had three shrimps that showed scutariella and I pulled those out and did a salt dip (1 tb. salt to 1 c. tank water - soak for 30-60 seconds, the parasite falls off immediately). I continued to medicate the tank for a few more days to ensure that I did not see anymore signs of illness. The combination of Paraguard and salt dips worked wonderfully! I have a heavily planted tank and it would be difficult to use the salt dip for everyone. I did not lose any shrimp or fish and I see many juveniles and newborns) and nobody showed any signs of stress. I have over half of a bottle left which I will keep on hand for other issues that may arise. A wonderful product! It is a blue/green color but does not turn the tank water any colors and is quickly dispersed. Also, if you are treating shrimp for scutellaria, be sure to remove molts as the parasite stays in the molt. The medication is only active for 24 hours, so I suggest doing water changes before adding medication to ensure that it remains in the water for therapeutic purposes. I kept an easy routine of dosing in the morning, on water change days I changed the water and then added medication.
- Reviewed in the United States on December 25, 2016I have to say Seachem products for me have been very reliable, I've used their ferts line such as Flourish, Iron, and Potassium and their Seachem Matrix product. I really wish I had purchased this sooner to use on my infected neon tetras which broke out in what appears to be fresh water ich to me. I originally thought it was a fungal infection so I tried Jungle Fungus Clear first with aquarium salt. I made it worst when I tried reducing salt levels which were likely controlling the ich amount because once removed the fish got more caked up. I knew then Jungle Fungus clear was definitely not helping after 4 days of treatment. I decided to up the heat to 82 degrees to help speed up the ich life cycle hoping that the salt would kill them while aerating the water with two bubble stones. Sadly it did not. I believe a combination of wrong medication, fluctuating temps, and 25% water changes stressed my poor Neons beyond to the point of no return and the 3 succumbed to their infections and died. Thankfully by the 2nd day of treatment I decided to pickup paraguard but would have to wait a few days before it would arrive. Once paraguard arrived, I did a 75% WC to remove as much Jungle Fungus clear as I could as I was unsure if it would be a bad mix with paraguard. 5 days of actual treatment and my neons have practically no more spots on them and they look and behave a lot better.
I am still pretty new to the hobby so I'm learning a lot on the way. Losing fish sucks and it's very saddening to watch. This is the treatment plan I followed and it worked very well, no more melafix/pimafix/jungle fungus clear for me:
(10 gal tank w/ heater and two bubble stones no filter)
Day 1: 5ml
Day 2: 5ml
Day 3: 5ml
Day 4: 5ml
Day 5: No dose, I think it would have been fine to dose but I wanted to give the fish a break.
Day 6: 5ml
Keep in mind since this dosage I did only 2, 25% water changes to help get rid of the floating crap and stuff that collected at the bottom since I have no filter. Also I made sure to dose the % loss from WC. I also did not reintroduce any aquarium salt which before treatment I had 10 teaspoons in the tank. So there's still at the least 50% aquarium salt still left in the tank, about 5 teaspoons. I also decided to put my Betta in with this medication to help him heal from a fungal infection. Here are some before/After pics of my Neons and my current Betta:
5.0 out of 5 starsI have to say Seachem products for me have been very reliable, I've used their ferts line such as Flourish, Iron, and Potassium and their Seachem Matrix product. I really wish I had purchased this sooner to use on my infected neon tetras which broke out in what appears to be fresh water ich to me. I originally thought it was a fungal infection so I tried Jungle Fungus Clear first with aquarium salt. I made it worst when I tried reducing salt levels which were likely controlling the ich amount because once removed the fish got more caked up. I knew then Jungle Fungus clear was definitely not helping after 4 days of treatment. I decided to up the heat to 82 degrees to help speed up the ich life cycle hoping that the salt would kill them while aerating the water with two bubble stones. Sadly it did not. I believe a combination of wrong medication, fluctuating temps, and 25% water changes stressed my poor Neons beyond to the point of no return and the 3 succumbed to their infections and died. Thankfully by the 2nd day of treatment I decided to pickup paraguard but would have to wait a few days before it would arrive. Once paraguard arrived, I did a 75% WC to remove as much Jungle Fungus clear as I could as I was unsure if it would be a bad mix with paraguard. 5 days of actual treatment and my neons have practically no more spots on them and they look and behave a lot better.I made it worst when I tried reducing salt levels which were likely ...
Reviewed in the United States on December 25, 2016
I am still pretty new to the hobby so I'm learning a lot on the way. Losing fish sucks and it's very saddening to watch. This is the treatment plan I followed and it worked very well, no more melafix/pimafix/jungle fungus clear for me:
(10 gal tank w/ heater and two bubble stones no filter)
Day 1: 5ml
Day 2: 5ml
Day 3: 5ml
Day 4: 5ml
Day 5: No dose, I think it would have been fine to dose but I wanted to give the fish a break.
Day 6: 5ml
Keep in mind since this dosage I did only 2, 25% water changes to help get rid of the floating crap and stuff that collected at the bottom since I have no filter. Also I made sure to dose the % loss from WC. I also did not reintroduce any aquarium salt which before treatment I had 10 teaspoons in the tank. So there's still at the least 50% aquarium salt still left in the tank, about 5 teaspoons. I also decided to put my Betta in with this medication to help him heal from a fungal infection. Here are some before/After pics of my Neons and my current Betta:
Images in this review
Top reviews from other countries
-
Manuel KimReviewed in Mexico on January 23, 2020
5.0 out of 5 stars Excelente producto
Buena calidad de los productos, es una marca confiable.
- MichaelReviewed in the United Arab Emirates on June 13, 2020
5.0 out of 5 stars Great medicine
Amazing medicine to always have on hand for sick fish
- Raphael FernandesReviewed in India on May 13, 2019
5.0 out of 5 stars Top Notch (at least in my instance)
Good product. One of the few products that can be safely used on invertebrates.
I used this product for a whole month by dosing my tank daily. I lost just one Cardinal Tetra and a little harm to my aquatic plants. But all good.
Would go for it again.
2 people found this helpfulReport - Lionel LocksleyReviewed in the United Arab Emirates on April 28, 2021
4.0 out of 5 stars Good
Quick delivery and good quality as expected.
-
SilvermanReviewed in Mexico on December 6, 2019
5.0 out of 5 stars Es bueno
Producto que ayuda mucho en situaciones de enfermedases