Ultra life float switch

[reefman MC]

My Ultra Life float switch is making an awful buzzing sound when it comes on and when it goes off. I cleaned the little barrel and cleaned out the pump that is adding the top-off water. It is a buzzing and clanking sound coming from the little box. Anybody know what my problem is?

[Mr_Quality]

Maybe a short in the relay? Probably should stop using it.

[reefman MC]

Please don't tell me that.

[Wallygator]

I would guess its the relay, it is not closing tight onto the coil. Replace or if you are good/careful clean the relay.
HTH