💦 Dive into a healthier aquarium experience! Infused with live nitrifying bacteria to eliminate ammonia and nitrates, promoting fish health. Designed for specific fish species; avoid use with copper-sensitive varieties. Simple dosing instructions for hassle-free treatment. A must-have for any serious aquarist looking to maintain optimal water quality. Effectively treats up to 94 gallons, ensuring a vibrant aquatic environment. Live bacteria for ammonia control Treats 94 gallons Copper sensitivity warning FritzAquatics Fritz Mardel Coppersafe is a 4oz treatment designed for aquariums up to 94 gallons, featuring live nitrifying bacteria that effectively eliminate ammonia and nitrates. Caution is advised for copper-sensitive fish species.