The “hazard” identified in the recall notice is a wiring problem that can cause the heaters to overheat during normal use, which in turn can lead to a fire hazard. The overheating can also cause the heater to shatter or the glass of the aquarium to break, resulting in a laceration hazard. The recall states that United Pet Group has received reports of 38 fires resulting in property damage and 45 reports of broken aquarium glass.
If you have a case where a Marineland Stealth or Stealth Pro aquarium heater is associated with a fire, you should consult the CPSC’s recall notice to determine if your model is one listed on the recall. The heaters associated with this recall are black plastic tubes and have a temperature adjustment knob at the top. They have also been sold as part of aquarium starter kits.