--- product_id: 3983084 title: "Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603" brand: "seachem" price: "€ 59.23" currency: EUR in_stock: true reviews_count: 10 category: "Seachem" url: https://www.desertcart.fr/products/3983084-seachem-paraguard-500-ml-16-9-fl-oz-603 store_origin: FR region: France --- # Safe for freshwater & marine tanks 10% aldehyde-based formula Non-toxic, fish & filter safe Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603 **Brand:** seachem **Price:** € 59.23 **Availability:** βœ… In Stock ## Summary > πŸ›‘οΈ Protect your aquatic world with science-backed care! ## Quick Answers - **What is this?** Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603 by seachem - **How much does it cost?** € 59.23 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/3983084-seachem-paraguard-500-ml-16-9-fl-oz-603) ## Best For - seachem enthusiasts ## Why This Product - Trusted seachem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Versatile Use:** Perfect for hospital, quarantine, and community tanks in both freshwater and marine environments. - β€’ **Aquarium Harmony:** Maintains pH balance and protects beneficial bacteriaβ€”no harsh chemicals involved. - β€’ **Bulk Convenience:** Three 500ml bottles ensure long-term treatment without frequent repurchasing. - β€’ **Trusted by Experts:** Highly rated with 4.7 stars and recommended by vets for effective parasite control. - β€’ **Powerful Parasite Defense:** Eradicates ich, fungal & bacterial infections with a unique aldehyde blend. ## Overview Seachem ParaGuard is a 10% aldehyde-based liquid treatment designed to safely and effectively eliminate parasites, fungal, bacterial, and viral infections in freshwater and marine fish. It is non-toxic to fish and aquarium filters, maintains pH stability, and comes in a convenient 3-pack of 500ml bottles for extended use. Ideal for hospital and quarantine tanks, ParaGuard is a trusted solution for maintaining a healthy aquatic environment without harming plants or fish. ## 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). Review: GREAT PRODUCT FOR GOLDFISH // UPDATE - I have a 17 year old goldfish and he's never been sick at all. I've always only used a top quality water conditioner and he's alone. A few weeks ago I noticed he was not himself...not eating and staying in the corner all the time with little perky swimming. I keep him in a very large, old fashioned bathtub with a big fountain for water // oxygen. I also notice a type of white stuff on him. First it was very pale white then became almost like a white salt look on him. I went into a major panic and bought this product. (along with a few other's from desertcart for treating ich and other diseases).... I moved him into a small tank with this medicine and completely cleaned out his pond and fountain. I added this to his fresh new pond/tub, along with water conditioner called Stress Coat (which I've used for all these years with no problems at all)......I have a soft / large net to gently pick him up to move him and he was so quiet. He's usually a perky one....I got the net here on desertcart also. He's at least 9 inches and looks 'fat' to me so I worried it could be bloating too. I put him back into his fresh tank / tub and waited a day before trying to feed to reduce anymore stress. YAY, he is eating again and swimming. He does enjoy my company though, lol.....I just love him. He's bright orange and I don't see any signs of disease again, yet. I did notice at times now he'll spit out his fish food and go for tiny pieces of flake food on the bottom. That worries me a little bit so I've ordered new food for him too. I was very pleased with this product. Seemed safe and complete. It seems to have saved him and I am so grateful. I wish I knew what he'd enjoy eating so I can keep him happy and healthy. I hope he'll be around for a long time. THANK YOU for this product. I used the Aquarium salt too but I think using this product primarily, did the trick as did cleaning out his tank // tub area completely too. It arrived on time. desertcart has saved my day more than once!! Any suggestions would be welcome to keep my fish glowing and going. Do I use it during EACH CHANGE? TIA~ ..............UPDATE:::: 12/18/2013 - Ohh no - My fish has that stuff on him again and he's not acting right. I bought him blood worms and new fish food of pellets (I have always only fed flake food) and he won't eat any of it now. He's not his perky self. He knows when I come in and swims over to me...is breaking my heart. I took pics of him but not sure if anyone can view them that knows goldfish. He seems 'off'....and a tiny // slight tilt. He does not fight me when I reach down to pass my hand over his side to remove those white thingys (like salt)). I don't like touching him as I may injure him more. IS THERE ANYONE TO ASSIST ME IN HERE? He has never been sick 1 single day in his life until we had to move to this horrid place. : (( - Should I attempt to move him outside as I have a big pond thingy out there for him but worry about wild animals then. I also bought Pimafix from desertcart but not sure if I can add it to his water too. It treats fungal infections. I just don't know the answer and don't want to make things more toxic. Thank you. >>>>>>>>>>>>>UPDATE Dec. 28, 2013 - ALL IS GOOD : ))) Ich is gone again and I keep re treating. This is a great product // Thank you and Elvee thanks you. You MUST re treat as this disease has cycles per my Marine Vet. ********UPDATE January 9, 2014 - This did NOT cure the Ich - per my mobile fish vet today she told me to buy this from desertcart, which I did:::: Mardel Quick-Cure Aquarium Treatment, 4-Ounce ..............I did not know they "sedate" a goldfish to examine them.... I could not watch.. my vet is great and I purchased the new Ich medicine above, more oxygen piping, etc. My fish vet sedates my Elvee, in a separate bucket and it is Ich. Also my water was not right so I had to buy a API water test kit here on desertcart. You can never oxygenate too much. She said my Elvee is happy and spoiled tho... : ))....... Review: Seems to have worked eliminating fungus - Product seems to have cleared cloudy ear fungus. ## Features - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002DWTIU6 | | ASIN | B002DWTIU6 | | Allergen Information | Allergen-Free | | Best Sellers Rank | #10,748 in Pet Supplies ( See Top 100 in Pet Supplies ) #85 in Aquarium Water Treatments | | Brand Name | Seachem | | Customer Reviews | 4.6 4.6 out of 5 stars (2,994) | | Date First Available | June 21, 2011 | | Department | Unisex-Adult | | Global Trade Identification Number | 00000116060301 | | Included Components | Seachem ParaGuard 500ml Bottles (3 Pack) | | Is Discontinued By Manufacturer | No | | Item Form | Liquid | | Item Type Name | Seachem ParaGuard 500ml Bottles (3 Pack) | | Item Weight | 454 Grams | | Item model number | 603 | | Liquid Volume | 16.9 Fluid Ounces | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer Part Number | 603 | | Model Number | 603 | | Pet Type | Fish | | Product Dimensions | 2.44 x 2.44 x 7.62 inches; 1 Pounds | | Target Species | Fish | | UPC | 000116060301 | | Unit Count | 16.9 Fluid Ounces | | Warranty Description | Warranty | ## Product Details - **Brand:** Seachem - **Item Form:** Liquid - **Item Weight:** 454 Grams - **Liquid Volume:** 16.9 Fluid Ounces - **Manufacturer:** Seachem Laboratories, Inc. ## Images ![Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603 - Image 1](https://m.media-amazon.com/images/I/51Xz+aPpRZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ GREAT PRODUCT FOR GOLDFISH // UPDATE *by J***οΏ½ on December 16, 2013* I have a 17 year old goldfish and he's never been sick at all. I've always only used a top quality water conditioner and he's alone. A few weeks ago I noticed he was not himself...not eating and staying in the corner all the time with little perky swimming. I keep him in a very large, old fashioned bathtub with a big fountain for water // oxygen. I also notice a type of white stuff on him. First it was very pale white then became almost like a white salt look on him. I went into a major panic and bought this product. (along with a few other's from Amazon for treating ich and other diseases).... I moved him into a small tank with this medicine and completely cleaned out his pond and fountain. I added this to his fresh new pond/tub, along with water conditioner called Stress Coat (which I've used for all these years with no problems at all)......I have a soft / large net to gently pick him up to move him and he was so quiet. He's usually a perky one....I got the net here on Amazon also. He's at least 9 inches and looks 'fat' to me so I worried it could be bloating too. I put him back into his fresh tank / tub and waited a day before trying to feed to reduce anymore stress. YAY, he is eating again and swimming. He does enjoy my company though, lol.....I just love him. He's bright orange and I don't see any signs of disease again, yet. I did notice at times now he'll spit out his fish food and go for tiny pieces of flake food on the bottom. That worries me a little bit so I've ordered new food for him too. I was very pleased with this product. Seemed safe and complete. It seems to have saved him and I am so grateful. I wish I knew what he'd enjoy eating so I can keep him happy and healthy. I hope he'll be around for a long time. THANK YOU for this product. I used the Aquarium salt too but I think using this product primarily, did the trick as did cleaning out his tank // tub area completely too. It arrived on time. Amazon has saved my day more than once!! Any suggestions would be welcome to keep my fish glowing and going. Do I use it during EACH CHANGE? TIA~ ..............UPDATE:::: 12/18/2013 - Ohh no - My fish has that stuff on him again and he's not acting right. I bought him blood worms and new fish food of pellets (I have always only fed flake food) and he won't eat any of it now. He's not his perky self. He knows when I come in and swims over to me...is breaking my heart. I took pics of him but not sure if anyone can view them that knows goldfish. He seems 'off'....and a tiny // slight tilt. He does not fight me when I reach down to pass my hand over his side to remove those white thingys (like salt)). I don't like touching him as I may injure him more. IS THERE ANYONE TO ASSIST ME IN HERE? He has never been sick 1 single day in his life until we had to move to this horrid place. : (( - Should I attempt to move him outside as I have a big pond thingy out there for him but worry about wild animals then. I also bought Pimafix from Amazon but not sure if I can add it to his water too. It treats fungal infections. I just don't know the answer and don't want to make things more toxic. Thank you. >>>>>>>>>>>>>UPDATE Dec. 28, 2013 - ALL IS GOOD : ))) Ich is gone again and I keep re treating. This is a great product // Thank you and Elvee thanks you. You MUST re treat as this disease has cycles per my Marine Vet. ********UPDATE January 9, 2014 - This did NOT cure the Ich - per my mobile fish vet today she told me to buy this from Amazon, which I did:::: Mardel Quick-Cure Aquarium Treatment, 4-Ounce ..............I did not know they "sedate" a goldfish to examine them.... I could not watch.. my vet is great and I purchased the new Ich medicine above, more oxygen piping, etc. My fish vet sedates my Elvee, in a separate bucket and it is Ich. Also my water was not right so I had to buy a API water test kit here on Amazon. You can never oxygenate too much. She said my Elvee is happy and spoiled tho... : ))....... ### ⭐⭐⭐⭐⭐ Seems to have worked eliminating fungus *by M***4 on March 24, 2026* Product seems to have cleared cloudy ear fungus. ### ⭐⭐⭐⭐⭐ Used successfully to treat scutariella *by S***D on July 31, 2017* I 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. ## Frequently Bought Together - Seachem ParaGuard, 500 mL / 16.9 fl. oz. - 603 - Seachem StressGuard Slime Coat Protection - Stress and Toxic Ammonia Reducer 500 ml - Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/3983084-seachem-paraguard-500-ml-16-9-fl-oz-603](https://www.desertcart.fr/products/3983084-seachem-paraguard-500-ml-16-9-fl-oz-603) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-04-24*