--- product_id: 19486256 title: "Fritz Mardel - Coppersafe - 4oz" brand: "fritz aquatics" price: "88 zł" currency: PLN in_stock: true reviews_count: 8 category: "Fritz Aquatics" url: https://www.desertcart.pl/products/19486256-fritz-mardel-coppersafe-4oz store_origin: PL region: Poland --- # Remains active over 1 month in aquarium Targets Ich, flukes & external parasites Treats 94 gallons per 4oz bottle Fritz Mardel - Coppersafe - 4oz **Brand:** fritz aquatics **Price:** 88 zł **Availability:** ✅ In Stock ## Summary > 🛡️ Defend your aquatic kingdom with CopperSafe – the ultimate parasite shield! ## Quick Answers - **What is this?** Fritz Mardel - Coppersafe - 4oz by fritz aquatics - **How much does it cost?** 88 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/19486256-fritz-mardel-coppersafe-4oz) ## Best For - fritz aquatics enthusiasts ## Why This Product - Trusted fritz aquatics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerful Parasite Defense:** Clinically proven to eliminate Ich, velvet, flukes, and anchor worms for a healthier tank. - • **Non-Staining & Crystal Clear:** Keeps your aquarium water pristine without discoloration or residue. - • **Precision Treatment Capacity:** One 4oz bottle treats up to 94 gallons, perfect for medium to large aquariums. - • **Long-Lasting Copper Stability:** Maintains therapeutic copper levels for over 30 days, reducing frequent dosing stress. - • **Safe for Most Freshwater & Saltwater Fish:** Formulated to protect your aquatic community—except copper-sensitive species. ## Overview Fritz Aquatics Fritz Mardel CopperSafe is a concentrated, stable copper treatment designed to eradicate common external parasites like Ich, flukes, and velvet in freshwater and saltwater aquariums. Treating up to 94 gallons per 4oz bottle, it remains effective for over a month without staining water, ensuring long-lasting protection. Ideal for professional aquarists seeking precise, reliable parasite control while maintaining crystal-clear tanks. Not suitable for copper-sensitive species or reef aquariums. ## Description For infections of: Ich, flukes (Gyrodactylus), anchor worms, velvet/protozoan diseases and other external parasites. Ichthyophthirius (Ich) – white spot disease is caused by a parasite that attacks all freshwater and saltwater fish species. The fish appears to be covered by numerous white spots. The parasite is easily transmitted from one fish to another. Ich can only be controlled in the free-swimming stage of the parasite. Five to 30 days may be needed before the infestation is completely eradicated. Copper safe solution remains active for over one month in the aquarium. It is a safe, stable, non-staining concentrate that does not color aquarium water. Be sure to add copper safe solution to replacement water when water changes are made. This will maintain the therapeutic level of copper safe solution. Because copper safe solution is so stable in water, partial water changes are the quickest way to remove it from the water. Review: Effective. Bad for rivers & ocean. - I have used this product for decades. I used to buy it in bulk. 80% of fish diseases are parasites of some kind. This pretty much kills them all. A little bit goes a long way. Unfortunately, copper's effectiveness at killing invertebrates is not limited to your home aquarium. Wastewater treatment plants do not take out much copper, and everything you put down the drain (water changes) is released by the wastewater plant into rivers, streams, lakes, or the ocean. Copper sulfate disrupts the food chains of aquatic habitats by nuking all of the insects, mollusks, crustaceans, animal-plankton, worms, etc. It starves wild fish, amphibians, small reptiles, and shorebirds. Therefore, it is a last-resort medication. For fungus, use maroxy instead. For Ich, find a malachite green medication, or use "quick cure."* I actually keep this product around for my houseplants: copper sulfate is a known fungicide, and it's slightly antibiotic. I use it for root rot when natural remedies (Ginger, cinnamon, coffee grounds, granulated sulfur) fail. It is a last resort treatment for this too, and I never put it down the drain. *Quick Cure® is lethal to pet shrimp. Move sick fish to a hospital tank before treating for any parasites if you have shrimp in the tank. Review: Saved my betta fish’s life from velvet disease! - If your betta fish has clamped fins AND looks like he has gold dust on him as if he is covered in pollen when you shine a flash light (not a phone flash light, but an actual flash light) on him, then you need CopperSafe. First, remove any carbon (carbon can also be present in replaceable filters, so cut them to get rid of the carbon balls that will absorb the mediation and make it ineffective) and perform a 50% water change with water that has been treated 24-48 hours ago (CopperSafe can become dangerous to your fish by binding with the chemicals in water treatments such as Prime and other dechlorinators and ammonia reducers, so it’s best to treat water 24-48 hours before adding it to your tank and adding CopperSafe). If you have a small tank and you aren’t good at chemistry conversions or math, ask someone for help to get the proper dosage in your tank. Too little will be ineffective and too much will be dangerous. Buy a copper testing kit that measures “chelated copper” for $7 at your pet store or online to make sure the copper is at a therapeutic level during the next 10 days. Don’t change the water for 10 days, and keep a towel draped over your tank because the velvet parasite uses light to grow. If you must change the water, you will have to do very precise math to replace the CopperSafe that you took out with the amount of water that was removed. Feed your fish a couple of pellets once per day if he’s still eating (mine had stopped). My picture on the left is of my betta fish with velvet disease on the day I added CopperSafe, and the picture on the right is on day 10 when I was able to perform a water change. And the last picture is of my betta fish now, nearly 1.5 months later! Happy and healthy! ## Features - Treats 94 gallons - Not for use in reef aquariums - Live Nitrifying Bacteria eliminates Ammonia and Nitrates - Do not use Copper safe solution with fish species that have a known sensitivity to copper ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00OTH68Z6 | | ASIN | B00OTH68Z6 | | Allergen Information | Beef | | Best Sellers Rank | #40,293 in Pet Supplies ( See Top 100 in Pet Supplies ) #380 in Aquarium Water Treatments | | Brand Name | Fritz Aquatics | | Customer Reviews | 4.5 4.5 out of 5 stars (419) | | Date First Available | November 15, 2014 | | Department | Unisex-Adult | | Global Trade Identification Number | 00080531420201 | | Included Components | Fritz Mardel - Coppersafe - 4oz | | Is Discontinued By Manufacturer | No | | Item Form | Stick | | Item Type Name | Fritz Mardel - Coppersafe - 4oz | | Item Weight | 4 Ounces | | Item model number | 42020 | | Liquid Volume | 4 Fluid Ounces | | Manufacturer | Fritz Aquatics | | Manufacturer | Fritz Aquatics | | Manufacturer Part Number | 42020 | | Manufacturer recommended age | 1 month and up | | Model Number | 42020 | | Product Dimensions | 5 x 1.75 x 1.75 inches; 4 ounces | | Target Species | Fish | | UPC | 080531420201 | | Unit Count | 1 Count | | Warranty Description | See Manufacturer Website | ## Product Details - **Brand:** Fritz Aquatics - **Item Form:** Stick - **Item Weight:** 4 Ounces - **Liquid Volume:** 4 Fluid Ounces - **Manufacturer:** Fritz Aquatics ## Images ![Fritz Mardel - Coppersafe - 4oz - Image 1](https://m.media-amazon.com/images/I/51-ZT1xnLZL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is there copper in this or not, what does copper safe mean, I put a stress formula in the aquarium that can not be mixed with copper,** A: Not sure about mixing it with stress formula. The bottle says it contains 2% chelated copper. **Q: Is this safe for scaleless fish like loaches?** A: Scaleless fish don't need special treatment, primarily because they're not actually scaleless. Inverts are highly susceptible to copper, but Aquatic vertebrate have a significantly higher tolerance. Also depends on the type of copper used **Q: Will this kill leeches in the tank?** A: I don't believe so.... **Q: can this be used to kill snails?** A: I guess but it's not good for the fish and water ## Customer Reviews ### ⭐⭐⭐⭐⭐ Effective. Bad for rivers & ocean. *by B***S on June 19, 2025* I have used this product for decades. I used to buy it in bulk. 80% of fish diseases are parasites of some kind. This pretty much kills them all. A little bit goes a long way. Unfortunately, copper's effectiveness at killing invertebrates is not limited to your home aquarium. Wastewater treatment plants do not take out much copper, and everything you put down the drain (water changes) is released by the wastewater plant into rivers, streams, lakes, or the ocean. Copper sulfate disrupts the food chains of aquatic habitats by nuking all of the insects, mollusks, crustaceans, animal-plankton, worms, etc. It starves wild fish, amphibians, small reptiles, and shorebirds. Therefore, it is a last-resort medication. For fungus, use maroxy instead. For Ich, find a malachite green medication, or use "quick cure."* I actually keep this product around for my houseplants: copper sulfate is a known fungicide, and it's slightly antibiotic. I use it for root rot when natural remedies (Ginger, cinnamon, coffee grounds, granulated sulfur) fail. It is a last resort treatment for this too, and I never put it down the drain. *Quick Cure® is lethal to pet shrimp. Move sick fish to a hospital tank before treating for any parasites if you have shrimp in the tank. ### ⭐⭐⭐⭐⭐ Saved my betta fish’s life from velvet disease! *by S***P on September 15, 2019* If your betta fish has clamped fins AND looks like he has gold dust on him as if he is covered in pollen when you shine a flash light (not a phone flash light, but an actual flash light) on him, then you need CopperSafe. First, remove any carbon (carbon can also be present in replaceable filters, so cut them to get rid of the carbon balls that will absorb the mediation and make it ineffective) and perform a 50% water change with water that has been treated 24-48 hours ago (CopperSafe can become dangerous to your fish by binding with the chemicals in water treatments such as Prime and other dechlorinators and ammonia reducers, so it’s best to treat water 24-48 hours before adding it to your tank and adding CopperSafe). If you have a small tank and you aren’t good at chemistry conversions or math, ask someone for help to get the proper dosage in your tank. Too little will be ineffective and too much will be dangerous. Buy a copper testing kit that measures “chelated copper” for $7 at your pet store or online to make sure the copper is at a therapeutic level during the next 10 days. Don’t change the water for 10 days, and keep a towel draped over your tank because the velvet parasite uses light to grow. If you must change the water, you will have to do very precise math to replace the CopperSafe that you took out with the amount of water that was removed. Feed your fish a couple of pellets once per day if he’s still eating (mine had stopped). My picture on the left is of my betta fish with velvet disease on the day I added CopperSafe, and the picture on the right is on day 10 when I was able to perform a water change. And the last picture is of my betta fish now, nearly 1.5 months later! Happy and healthy! ### ⭐⭐⭐⭐⭐ Finally, something works!! *by J***L on June 5, 2021* I very rarely review products but this is an exceptional product. I had a group of swordtails and other fish that all came down with what appeared to be symptoms or ick or velvet (flashing, darting, shimmies, clamped fins, listlessness, etc.) but with no spots or dusting typical of those infections or heavy breathing indicative gill flukes, for example. My go-to treatment for ick and velvet is salt, which is usually effective; and these fish being very salt tolerant, I dosed a tablespoon per gallon, which I thought would have knocked out damn near anything. Well, despite a very temporary improvement, the symptoms persisted and the fish continued to suffer. Rather than trying a myriad of other treatments specific to only certain parasites, I decided on coppersafe - something that can knock down many different parasites. I pulled my snails out of the tank and dosed and the fish recovered within a few hours, fins up and moving and behaving normally. I don't think I'll know what these fish had but this product was highly effective at taking it out. I consider this a first line defense for anyone struggling to battle these symptoms, just make sure you remove any inverts as this stuff will kill them too! ## Frequently Bought Together - Fritz Aquatics Fritz Mardel - Coppersafe - 4oz - API General Cure Freshwater and Saltwater Fish Powder Medication 10-Count Box - Hikari USA Inc. Prazipro - Safest Parasite Treatment 1oz --- ## 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.pl/products/19486256-fritz-mardel-coppersafe-4oz](https://www.desertcart.pl/products/19486256-fritz-mardel-coppersafe-4oz) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-27*