SunGrow - 10 Watts Betta Heater Tropical Fish Tank Water Temperature up to 5-gal New condition - Opened / Distressed retail package. Item is as shown in the photos. Description: ? HAVE A HAPPY ACTIVE BETTA: Bettas come from warm tropical waters. Bettas thrive in temperatures between 76-82? (24-27.7?). When your tank?s water temperature drops below 74? (23?) or rises above 82? (27.7?), it could cause stress or health issues. If your betta?s been sluggish, the eater might be too chilly. ? SAVE SPACE: SunGrow?s heater is a must-have because it secures to the side of your betta?s mansion using unused verticle space and keeping it out of the way of cleaning and water changes. ? NO-FAIL PRESET FUNCTION: SunGrow?s smart preset function lets you set this heater to the perfect temp and walk away. The heater will automatically reach and maintain the preset temperature. No worries, no double-checking needed. ? 2-MINUTES TO SETUP: The short nozzle feature of SunGrow Aquarium sand and substrate cleaner is perfect when you want to replenish or drain water out of your tank. Just place the nozzle in your tank. For convenience, attach it with a suction cup. This will make work easier for you because you don?t need to hold it while draining out water! Press on, or squeeze the pump bulb 5 to 7 times and the water will start to flow out of the nozzle. See the description below for more details. ? IDEAL FOR BREEDING/NURSERY TANKS: SunGrow?s heater is ideal for breeding tanks and nursery tanks for Siamese fighting fish, shrimp, and angelfish. It?s also perfect for African frogs and eels. ? BETTA AND FISH-FRIENDLY: SunGrow cares about fish as much as you do, that?s why our heating element is encased in durable plastic so fish won?t be burned by the heater. SunGrow is the heater you can have confidence in and will dd to the habitat your betta needs to thrive. With reliable stay-put suction cups, preset temperature and auto-shutoff features, this heater has everything to make caring for your aquatic pets easy. Specifications: Material : Plastic Color : Black Size : 5.5? x 1? (13.5 x 2cm) Weight : 0.25 lb Type : Submersible Suitable for : Fishes and Shrimps Function : Preset Temperature and Auto-Shutoff Brand : Sungrow Count Per Pack : 1