I just ordered 2 Tunze turbelle nanostream 6105's for my QT.
I have a Tunze Silenze return pump and a 6025 Nanostream on my 57G, and they are both running strong after almost 3 years. The Nano is fairly noisy, probably more due to its age than quality. I also found it necessary to aim it at a pile of rocks because I'm pretty sure the concentrated jet stream it puts out would de-fin anything that got in front of it.
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