A fish tank powerhead holding device is taught, the device comprising a first magnetic assembly with a first permanent strong magnet and a non-stick surface adhered to one side, a second magnetic assembly with a second permanent strong magnet that is magnetically attracted to the first magnetic assembly and a non-stick surface adhered to one side, and a commercially available powerhead that is permanently affixed to said first magnetic assembly opposite from said non-stick surface such that the powerhead can be positioned to effectively aerate a fish tank.