Coral reefer
Past President
Have you tried moving it around? They work by vibrating, so depending what you sit it in/attach it to it can create a lot of noise. I suggest hanging it from something with like bungee cords or zip ties or shoelaces so it won't transmit the vibrations to anything nearly as much. The pump itself (aquatec 8800?) is not too bad if you get it right.I can hear my ro/di booster pump in the house when it’s running in the garage. If the Mag24 is fairly loud, it might defeat some of the purpose of having the sump in the garage.