Directions
Directions: For best results, remove activated carbon or filter cartridge from filter and continue aeration. For each 10 gallons (38 L) of water, empty one packet directly into aquarium. Repeat dose after 48 hours. Wait another 48 hours, then change 25% of aquarium water and add fresh activated carbon or replace filter cartridge. One package treats up to 100 gallons. Two doses required for full course of treatment. Will not discolor water. Safe for use with live plants.