The Planted Tank Forum - View Single Post - The best bio filter
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post #20 of (permalink) Old 03-24-2013, 06:51 PM
thelub's Avatar
Join Date: Jan 2013
Location: SE Washington
Posts: 1,983
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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