Carbon
Nothing wrong with using it, you don't need a lot of it. I have a 29g standard and run carbon/purigen/filter floss in my hob. If you have a mixed reef with softies/Lps/sps you need some carbon to help with chemical warfare. I put 2-3 tablespoons in a bag and change it out once a week.
Last edited by canadianbudz604; 01-02-2014 at 05:54 AM.
Reason: Added more
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