Noisy fluval 406
I have just fitted a new fluval 406 in my new 250l tank. It is very noisy. A very loud hum even with the cabinet door closed. Definitely not whisper quiet. I had quite a bit of trouble priming it. It was nothing like the instructions, it was not easy. I had to eventually fill up the filter and then prime it without the tubes in then when completely full prime it some more then turned it on. Any ideas on why it is so loud. It is a bit like white noise and loud hum.