Posted: 8/26/2010 from united states
Carbon is good, but the mesh bag is really too small to hold 7lbs and be used in the sump. It's so tight in the bag it's like trying to deal with a hardened lump of concrete. I had to buy much larger size bags to allow the 7lbs to be flexible. 7lbs needs to be placed in bags twice the size that this came in. As always, order received next day.
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