I've just checked my heater, my Tunze 6015 (running in the sump) and my Vortech.
The heater looks fine and the Vortech was fine when I checked it 2 weeks ago.
But on the Tunze pump it looked like the surface of the shaft had gone off a little bit. Could that maybe be an issue?? I've attached a photo of it.
I also have a lot og hard white "items" in my sump og on the back glass in the display.
And idea what that could be??
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