Seachem Malawi/Victoria Buffer, 4 kg / 8.8 lbs A Blend Of Carbonate Salts Designed To Enhance The Natural Environment Of Cichlids Increases Water Hardness, Buffer Capacity, And Ph. For optimum replication of Malawi and Victoria environments, use with Sachem Cichlid Lake Salt 300 Grams Treats Up To 900 Gallons