Fluval Biological Enhancer provides immediate inoculation with a powerful team of beneficial bacteria, creating a safe and stable biologial habitat for your fish from day one Highly effective micro-organisms quickly metabolise harmful ammonia and nitrite, helping prevent toxic spikes and supporting a healthier enivornment Recommended to aquarium set ups, as it helps to establish essential biological flora right from the beginning Regular application of the Biological Enhancher helps to exclude the establishment of harmful or undesirable bacteria, promoting water health and quality long-term Using the water treatment builds up a robust foundation against bacteria, therefore enabling a safe environment for immediate addition of fish to your tank