Originally Posted by ImACoolguy
You could use a new dishwashing sponge if you wanted. The BB don't care.
Think you mean potscrubber?? Dishwashing sponges are a nono, some have anti mold/bacteria agents in there, bad news for a fish tank..
Op- seachem matrix is pretty sweet, any highly porous media will do. Avoid plastics like bio balls. Ceramic and such are best.
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