Aquarium heater 1.18~ 32 adjustable temperture 2.square point direct-reading display 3.8 wattages for choice, Aquarium heater1. 18°C~ 32°C adjustable temperture, square point direct-reading display2. The outer transparent tubes are borosilicate glass or quartz tube for choice3. Accurate ,durable and reliable4. 8 wattages for choice,suitable for various tanks5. One of the most reliable heaters in ...