500G Sandstone Filter Aquarium Fish Tank Stone Material Bacterial House Nitrifying

This pack of filter media is ideal for new or heavily populated aquarium to purify water and resist algae growth; Color:Mi*ed Color; Type:500g/Bag; Feature: 1. Culture of nitrifying bacteria; 2. Durable and not easily powdered; 3. Stabilize the PH value of fish tank; 4. Purify water and resist algae growth; 5. Scientific mi*, makes better filtering effect; 6. For freshwater and marine environment; 7. Reduces stress on fish; 8. Ideal for new or heavily populated aquarium; Note: 1. Use water in the fish tank or removal of chlorine water for cleaning; 2. Because the activated carbon itself has carbon powder, please clean the activated carbon before use; Package Include: 1 Pack*Filter Medi; 1*Filter Net Bag