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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
maximum level and an alarm
and the included crystal sand media
Includes 2 free replacement diaphragms
Flat priming and quiet operation
21mm Bio Balls Aquarium & Pond Filter Media Quantity?:100 BioBalls maximum level and an alarm21mm Bio Balls Aquarium & Pond Filter Media Premium Bio Balls Standard 21mm Filter media forms an essential part of any aquarium or pond filtration system. Our 21mm Bio Balls provide a large surface area for bacteria to develop, helping to break down ammonia and nitrite. Bio Balls also help improve overall water quality by maintaining healthy oxygen and PH levels, and absorbing and breaking down poisonous ions. Long lasting and highly effective, our
