the diy filters are easy to build, cheap to build and work well. So depends on if you would rather spend the money or make your own. I know nothing about that filter.
Might want to post a link to one, or post pics, I doubt may here actually know what a 4000 gal Ultima2 looks like, much less could give a review for it. Is it a flow through system, canister pressure filter, Other?
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