Calentador de acuario Lefunpets, 25 W, a prueba de explosiones, mini calentador sumergible para tanque de peces para tanque de Betta de 3 a 5 galonesMaterials Certified This fish tank heater has certificated by UL, CE, ROHS, FCC certifications. Anti explosion, Waterproof, Scald preventing, Safe operation for pet betta. Mini Sized Specific perfect for mini aquarium under 5 gal 20L. The aquarium heater provides a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water. Intelligent Control The submersible aquarium heater works automatically turn on off to achieve the