Ultima filter for saltwater ?

[Brent]

I have a ultima pond filter I used on my 600 was wondering if anyone has ever or if try can be used for large saltwater shark tanks etc? I can't find any info on using them for salt


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[Brent]

I usually use jus use live rock for filtration in my sump I dot want something that's going to be a nitrate machine like bio balls r supposed to be etc.... Any info apprecitaed


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