API 2341 Stress Zyme+ Thermometers
Help maintain a naturally balanced aquarium treats up to 120 gal pop display of one dozen 1 oz Bottles (30 ml)helps clean dirty aquarium. Contains live bacteria to improve development of natural biological filter. Contains 100 million live bacteria per teaspoon. For setting up and maintaining a fresh or saltwater aquarium. One ounce treats 60 U. S. Gallons. Size: 4 fl. Oz. Size: 4 fl. Oz.