I'm still using it on the nanocube, which has built-in filtration behind a partition that provides good flow around the "bell". I gave up on the stainless steel coffee filter, though. I think the mesh on it is so fine that it restricts water flow. I'm currently using a mesh bag that holds the ceramic noodles that came with the 'cube as a bell, but have been thinking about switching to a fish net or something similar. Since it's out of sight, appearance is not a big issue.
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Well, at least my algae is pearling... 
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