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Unread 02/09/2018, 11:16 AM   #4
Pet Detective
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Join Date: Jun 2013
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Either media would do the trick in providing surface area for the bacteria, I do think rings would fit better in the canister. I do use mechanical hang on filtration in my reef tank, mainly to keep the water crystal clear and debris free, a canister would also accomplish this task, they are better at mechanical filtration than biological, however in my opinion they are a good supplement to live rock, sump/refugium or wet dry filtration, people in the last 10 years or so have begun to call mechanical filters "nitrate factories" but I am not going to get into a wizzing contest again about this....if you use a canister or any mechanical style filtration, keep it clean weekly and nitrates will not be an issue.


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