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Not much of a fish person, but it seems you might be able to drill (with a dremel, carefully) two (in/out) feed holes for water lines into the base. Then run these to a filter and do it that way. Its probably a lot of work and you risk breaking the vase, but it you really want to, it might work. Get some clear caulk for around the feed tubes and seal it nicely. Not sure how to hook them up to a filter/airator, but once its away from the vase, I suspect theres more you could do.
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