Review on 🐠 Fritz Mardel Coppersafe Aquarium Treatment - 4oz by Karen Peterson

It didn't help my fish in any way, didn't slow down or stop parasites. I'm giving it an average rating because I don't think it harmed the fish and maybe I'm just late so I don't want to hit too hard. But by the time you can tell your fish has velvet, it's too late for that, too. The small bottle combined with the large amount needed for a regular tank (20 gallons) also makes it very expensive.