Seachem Matrix

[physicsdude]

Hi- I have a bottle of Matrix that I used before on a canister filter. So, its been inert for seevral months. My question is should I use or should it be pitched to the garbage heap? Here's some info on it:

http://www.petsmart.com/global/produ...trix&N=2023693

[theotheragentm]

Well, as far as surface area goes, it is still providing a great place for bacteria to grow for biofiltration. There would be no need to replace that part of it.