All the features of todays Aquasafe now with BioExtract. The new formula contains seaweed extracts (natural biopolymers) which support the development of beneficial filter bacteria for healthy and clear water. The added ingredients help to reduce aquarium pollution by strengthening the bacterial bed. As always Tetras Aquasafe water conditioner makes tap water safe for fish. Works in seconds to neutralize chlorine chloramines and heavy metals present in tap water that can be harmful to fish. One teaspoon treats 10 gallons. Provides a slime coating to help wounds heal and protect fish from abrasions. Unique colloid ingredients have been designed to protect fishs delicate gills and membranes. Aquasafe can be used with Freshwater and Marine fish. Aquasafe is the market leading water conditioner brand in the US and has been protecting fish for more than 30 years. (INTL) Multi-lingual package for international markets.