Biological Filter Media Bio Balls with Sponge 46mm/26mm- C7
- Bio Ball provides a large surface area on which water-filtering microbes can grow.
- Place the bio balls in the stream of water running through your fish tank’s filter
- These bio balls contain a sponge in them. so it will give you better filtration and create a nitrogen cycle fast.
- This sponge inside every bio ball is not an ordinary sponge. This sponge is Bio sponge.
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