Ocean Clear filters are great! All you need a good pressure rated pump to get the most out of them. I have a couple of the 354 polybead models on different tanks. They actually do a better job than my tanks with wet-drys. I've been thinking of adding a 319 after my 354 inline on a 125gal. tank that's overstocked, for water polishing purposes. Good to hear yours is doing the job.