HGE1212: Features: -Supplement-Consistent performance from each container due to bio-floc technology for improved shelf life and product viability-Ensures that biological pollutants produced by fish are rapidly converted to a non-harmful compound-Works to prevent fish loss-Fast acting responsive ammonia and nitrite elimination-Suitable for freshwater and saltwater aquariums-Establishes a safe biological aquarium environment for your fish-New high concentration formula that reduces fish loss and establishes essential conditions in new aquarium set-ups-Exclude the establishment of undesirable bacteria in aquariums. Options: -Available in 4.1 oz, 8.5 oz, 17 oz. and 68 oz. sizes. Assembly Instructions: -No assembly required. Dimensions: -4.1 oz. Dimensions: 5" H x 1.8" W x 1.8" D-8.5 oz. Dimensions: 8" H x 2.3" W x 2.3" D-17 oz. Dimensions: 6.7" H x 3" W x 3" D-68 oz. Dimensions: 8.3" H x 6.8" W x 3.5" D. Collection: -Nutrafin collection.