High-Quality Filter Media, Filter Material Balls, Porous Power Balls with Bacillus Natto, 2L, Immediate Shipping, Free Shipping

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Please choose porous filter media to promote bacterial growth. We do not recommend ceramic filter media.
These are Taiwanese-made porous natto bacteria power balls for use in hang-on-back filters, external filters, etc., suitable for both freshwater and saltwater.
They are harder than regular filter media and last longer.
They are called 3LDK for bacteria.
Fired at high temperatures. Packed with a rich variety of natural elements, essential minerals, and trace elements, they promote the growth of biological colonies and retain a large amount of high-quality bacteria. They are a great help in restoring natural water quality and providing the optimal living environment for your fish.
Suitable for freshwater and saltwater tanks. Reduces ammonia and nitrate levels.
When using, there is powder on the surface, so please rinse lightly with water before use. Do not rub or wash vigorously, as this may cause the balls to break and generate more powder through friction.