How to Make a Humidifier for an Aquarium

If you are raising a pet or plants in an aquarium, you may need to add a humidifier if you live in a dry area. For homes, the recommended humidity level is 30 to 40 percent. You need to keep your humidity levels below 65 percent to decrease mold growth, and 50 percent to decrease the chance of getting dust mites. Raise the humidity in your aquarium by making a humidifier and keep your animals or plants happy.

Things You'll Need

  • Digital hygrometer
  • Cellulose sponge
  • Scissors
  • 2-by-2-inch plastic sandwich bag
  • Hole-puncher
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Instructions

    • 1

      Check the humidity levels in your aquarium, using a digital hygrometer.

    • 2

      Cut a cellulose sponge to 2-by-1 inches, using scissors. Soak the sponge in water and squeeze it to remove half the water. The sponge should be moist but not wet.

    • 3

      Insert a hole-puncher into a plastic sandwich bag. Punch 10 holes on one side of the sandwich bag.

    • 4

      Put the cut sponge into the open sandwich bag. Press on the locking mechanism on top of the sandwich bag to close it.

    • 5

      Insert the plastic bag into the aquarium with the hole-side facing up. Remove and rewet the sponge as needed.