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· Premium Member
6,409 Posts
Yep. You can still use carbon, it won't hurt but it will absorb certain nutrients.

You can also remove the carbon and use the filters. As the other people mentioned you can also go to walmart or a fabric store and buy a 4 foot by 50 foot sheet of comforter stuffing. I paid about 9$ for a quarter inch thick sheet of 4 feet by 50 and I'm still using it as filter floss 5 years later.

In the long run .99 cents is quite expensive.
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