I've had terrible luck with the reliability and noise level with the Vortechs. I sold them all at one point and was about to purchase the Tunze. Just couldn't do it. So bought 3 new Vortechs. IMO the Tunzes are big and ugly compared to the Vortechs. Plus hate the look of any wires in my tank. I haven't any bad habits anymore so if I have to buy replacement parts every so often than so be it.
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