I shut it off to do a water change and it wouldn’t turn back on afterwards. I opened it up and the plastic covering the impeller was all cracked with rust all over the impeller magnet. I’m convinced this is why I had recently lost a bunch of SPS. Only place I could get a replacement was from the Tunze USA rep, it actually cost more than what I got it for, but he gave me a deal.
I probably have about 2 years of use on it, I bought it secondhand and it and box and everything looked brand new. The guy said he only used it for a couple months.