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Discussion Starter · #1 ·
so i have a fluval 304 on my tank...for the insides of the filter i got it from a guy, he swapped what ever was inside of it (carbon or whatever) its packed with lava rocks....he told me he swapped it around because it could catch more stuff or whatnot instead of the other...is this alright?
 

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AQHU RULES
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i have to admit i have carbon in my 404, but do agree you dont need it as permanent adition to your filter
 
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