I have Tunze nanostreams (6025 and 6055) and recommend them without pause. You should come check them out sometime and get that red paly frag while you're here.

Keep an eye for used nanostreams at Preuss. Seems like they have them from time to time.

HTH,
Tom

PS the 6055 should work on the wavemaker... but be sure to verify that with the Preuss crew it you go that route.