Has anyone used a dB meter or an app on their phones to see how loud their grow system is? What reading did you get?
Mine's at 50 dB right up close to the fan and I am thinking that it might be on the border. Can't hear it outside and if the door is shut it's inaudible.
But what about the neighbours in a block of flats?
Do fans get noisier as they get old? Would checking the dB levels of them be any use as to gauge the wellness, or remaining life expectancy of the fan?
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