Bought five, yes five and thus far regret purchasing. Restarting them when doing tank maintenance takes longer than cleaning the tank. One I still can't going just very weak stream flows when out take held above water line. I've reached out to Hagen but doubt there's much to be done. Must confess I've been using hob's for probably twenty years with no problems. Well that's my rant for the day
I finally got it operating. I think it's the sequence of shutting off water and power. My understanding is water off then power. Oh well.
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