All Pond Solutions Plastic Bio Balls - Replacement / Top-up Filter Media for the All Pond Solutions Aquarium & Pond Filter Range.
Provides a large surface area for nitro-bacteria development, and will help produce and maintain a high water-oxygen level. They will also keep the PH balance at neutral for a long time and can absorb and dissolve poisonous ions. Overall a very efficient way of improving water quality.
Features
Product Material Excellent for Nitro-bacteria Cultivation
Diameter: 25mm / 1" inch
Packaged: 40 = 1 x Bag of 40 Balls
Packaged: 200 = 5 x Bagsof 40 Balls
Packaged: 400 = 10 x Bag of 40 Balls
Packaged: 800 = 20 x Bagsof 40 Balls
Packaged: 1000 = 30 x Bagsof 40 Balls