The Planted Tank Forum - View Single Post - The best bio filter media....um...ever
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Old 03-24-2013, 06:51 PM   #20
thelub
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Just got some of the spheres yesterday and they didn't appear to be very fragile at all. There was a small amount of dust in the bottom of the bag, but the spheres were fine. A quick rinse and they were clean and ready to use.
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