--- product_id: 3983084 title: "ParaGuard, 500 mL / 16.9 fl. oz. - 603" brand: "seachem" price: "₨29683" currency: LKR in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.lk/products/3983084-paraguard-500-ml-16-9-fl-oz-603 store_origin: LK region: Sri Lanka --- # Safe for freshwater & marine fish 10% aldehyde formula, no formaldehyde 3x 500mL bottles for long-term use ParaGuard, 500 mL / 16.9 fl. oz. - 603 **Brand:** seachem **Price:** ₨29683 **Availability:** ✅ In Stock ## Summary > 🐟 Defend your aquatic kingdom with ParaGuard—because your fish deserve the best! ## Quick Answers - **What is this?** ParaGuard, 500 mL / 16.9 fl. oz. - 603 by seachem - **How much does it cost?** ₨29683 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/3983084-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 - • **Fish & Plant Safe Formula:** Protect your aquatic ecosystem without compromising plant or fish health. - • **Non-Invasive & pH Neutral:** Gentle on your tank’s balance—no harsh chemicals or pH shifts. - • **Powerful Parasite Control:** Eradicates ich, fungal, bacterial & viral lesions with a proprietary aldehyde blend. - • **Triple Bulk Pack Convenience:** Stay stocked and ready—never run out during critical treatments. - • **Trusted by Aquarists Worldwide:** Join thousands of pros who rely on ParaGuard for healthy, vibrant fish. ## Overview ParaGuard is a premium, aldehyde-based parasite treatment designed for freshwater and marine fish. It offers a safe, non-toxic alternative to formalin, effectively eliminating ich and external infections without altering tank pH or harming plants. Packaged in a convenient triple 500mL set, it’s ideal for hospital tanks and new fish introductions, ensuring a healthy aquatic environment with minimal stress. ## 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: Great product - Great price for a great product ## 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 | | Allergen Information | Allergen-Free | | Best Sellers Rank | #10,763 in Pet Supplies ( See Top 100 in Pet Supplies ) #77 in Aquarium Water Treatments | | Brand | Seachem | | Brand Name | Seachem | | Customer Reviews | 4.7 out of 5 stars 3,008 Reviews | | Global Trade Identification Number | 00000116060301 | | Included Components | Seachem ParaGuard 500ml Bottles (3 Pack) | | Item Form | Liquid | | Item Type Name | Seachem ParaGuard 500ml Bottles (3 Pack) | | Item Weight | 454 Grams | | Liquid Volume | 16.9 Fluid Ounces | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer Part Number | 603 | | Model Number | 603 | | Number of Packs | 3 | | Pet Type | Fish | | 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 - **Number of Packs:** 3 ## Images ![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***� 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... : ))....... ### ⭐⭐⭐⭐⭐ Great product *by M***E on May 15, 2026* Great price for a great product ### ⭐⭐⭐⭐⭐ Seachem is fairly dependable *by R***R on April 18, 2026* Works on tetras. ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.lk/products/3983084-paraguard-500-ml-16-9-fl-oz-603](https://www.desertcart.lk/products/3983084-paraguard-500-ml-16-9-fl-oz-603) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-06-13*