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black diamond blend

430 Views 6 Replies 3 Participants Last post by  nitrofish
hey how often should this stuff get changed in the media containers i just put it in yesturday and wondering how long it will last
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i know i was just wondering how long it lasted. but since u say that what is other important media this is for my emperor 400 filter. MAD told me to get biomax i will be buying that soon enough
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