---
product_id: 339675108
title: "Fritz Aquatics Mardel Copper Safe Treats | Size: 118ml (4oz) | Aquarium Fish Medicine | Indian Fish Monsters (IFM)"
brand: "fritz aquatics"
price: "¥265"
currency: JPY
in_stock: false
reviews_count: 5
url: https://www.desertcart.jp/products/339675108-fritz-aquatics-mardel-copper-safe-treats-size-118ml-4oz-aquarium
store_origin: JP
region: Japan
---

# Targets Ich & multiple parasites Treats up to 94 gallons Stable, non-staining formula Fritz Aquatics Mardel Copper Safe Treats | Size: 118ml (4oz) | Aquarium Fish Medicine | Indian Fish Monsters (IFM)

**Brand:** fritz aquatics
**Price:** ¥265
**Availability:** ❌ Out of Stock

## Summary

> 🐠 Defend your aquatic kingdom with copper-powered precision!

## Quick Answers

- **What is this?** Fritz Aquatics Mardel Copper Safe Treats | Size: 118ml (4oz) | Aquarium Fish Medicine | Indian Fish Monsters (IFM) by fritz aquatics
- **How much does it cost?** ¥265 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/339675108-fritz-aquatics-mardel-copper-safe-treats-size-118ml-4oz-aquarium)

## 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

- • **Large Volume Coverage:** One 118ml bottle treats up to 94 gallons, making it a cost-efficient solution for medium to large tanks.
- • **Easy Maintenance Integration:** Add to replacement water during changes to maintain therapeutic levels effortlessly and keep parasites at bay.
- • **Long-Lasting Copper Stability:** Remains active for over a month without discoloring water, ensuring continuous protection with minimal dosing.
- • **Broad-Spectrum Parasite Defense:** Effectively combats Ich, flukes, anchor worms, velvet, and other external parasites for a healthier aquarium.
- • **Safe for Sensitive Fish (With Caution):** Copper safe formula minimizes risk but avoid use with copper-sensitive species and in reef tanks to protect your ecosystem.

## Overview

Fritz Aquatics Mardel Copper Safe Treats is a potent, stable liquid medication designed to eliminate a wide range of external parasites including Ich and flukes in freshwater and saltwater aquariums up to 94 gallons. Its non-staining, long-lasting copper formula ensures effective parasite control while maintaining water clarity. Ideal for professional aquarists seeking reliable, broad-spectrum parasite defense, it requires careful use around copper-sensitive species and reef environments.

## 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: Safe and effective remedy when used correctly. - I mainly use copper treatments in moderation when introducing new tank mates and as a prophylaxis. Copper is also effective at controlling algae blooms. However, be sure to research which types of aquatic inhabitants don’t tolerate copper treatments.
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.

## 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 |
| Allergen Information | Beef |
| Best Sellers Rank | #57,269 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,228 in Water Treatments |
| Brand | Fritz Aquatics |
| Brand Name | Fritz Aquatics |
| Customer Reviews | 4.5 out of 5 stars 399 Reviews |
| Global Trade Identification Number | 00080531420201 |
| Included Components | Fritz Mardel - Coppersafe - 4oz |
| Item Form | Liquid |
| Item Type Name | Fritz Mardel - Coppersafe - 4oz |
| Item Weight | 4 Ounces |
| Liquid Volume | 4 Fluid Ounces |
| Manufacturer | Fritz Industries |
| Manufacturer Part Number | 42020 |
| Model Number | 42020 |
| Net Quantity | 1 Count |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 080531420201 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Fritz Aquatics
- **Item Form:** Liquid
- **Item Weight:** 4 Ounces
- **Liquid Volume:** 4 Fluid Ounces
- **Manufacturer:** Fritz Aquatics

## Images

![Fritz Aquatics Mardel Copper Safe Treats | Size: 118ml (4oz) | Aquarium Fish Medicine | Indian Fish Monsters (IFM) - Image 1](https://m.media-amazon.com/images/I/51-ZT1xnLZL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Safe and effective remedy when used correctly.
*by O***N on 11 May 2026*

I mainly use copper treatments in moderation when introducing new tank mates and as a prophylaxis. Copper is also effective at controlling algae blooms. However, be sure to research which types of aquatic inhabitants don’t tolerate copper treatments.

### ⭐⭐⭐⭐⭐ Effective. Bad for rivers & ocean.
*by B***S on 19 June 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.

### ⭐⭐⭐⭐⭐ Finally, something works!!
*by J***L on 5 June 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

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-02*