Magic magnetic treasure is an activated carbon filter material with strong adsorption capacity and good odor removal effect. Used in fish tanks, it can effectively remove the odor in water, balance the PH value, and solve the problems of turbid water, abnormal water color and fishy water. After the new fish tank was fitted with Magic Magnetic Treasure, the water became clear and transparent within 6 hours, and there was no odor for a long time. Put the used fish tank directly in the filter tank with magnetic treasure, and you can see the effect within a few hours.