| Both of my tunze nanostreams had issues, but they replaced parts and I like them. I have a 6045 and a 6025. I did notice that on difference in the two is the 6045 has less restricted flow into the prop area. Make me wonder what would happen if I dremmelled it out some on the 6025, because the motor unit looks identical and the other parts are the same.
Anyway I liked the size of the Tunzes. They are just a little smaller. Though I think the smallest koralia might be smaller but the biggest is even larger. | 
