<p><b>50W Aquarium Heater,7.2 x 1 x 1in,1.5M/4.9ft cable</b></p> <p>Fish tank size: 5~15Gollons </p> <p>This heater is simple in appearance, placed in your aquarium, unobtrusive and will not destroy the fish tanklandscape. </p> <p>We adopted 2mm thickened quartz glass, muchsafer for both human and animals. And it will turn off automatically whenreaches temperature you set, without overheating.</p> <p>This heater is easy to operation, justadjust the temperature adjustment button to set the require temperature，then you can forget it , the heater will automatically control thepower on or off to the heating part according to the difference between thewater temperature and the set temperature, but please pay more attention to thechange of the water temperature within one week.</p> <p><b>Features:</b></p> <p>1. Good in maintain temp.</p> <p>2. Both suitable for freshwater andsaltwater.</p> <p>3. Complete accessories: An extra stick-on thermometer(just peel and stick) and 2extra suction cups are provided for spare (total 3).</p> <p>4. Better construction: Adopt8-slotmulti-branched heating wire ceramic frame, better heat dissipation, 7.8 x1 x 1inch, saving more space for your fish.</p> <p><b>Cautions:</b></p> <p>1. The heating part must be fully submergedin the water to avoid dry-burning, otherwise will cause damage to heater.</p> <p>2. Please clean the heater regularly toremove dirt from the heating tube and keep it in good working condition.</p> <p>3. Please make sure that you have turned itoff and it has cooled down completely when you need to take it out from water.</p> <p>4. Make the cable slightly droop, make surethe lower end of the cable lower than the height of the socket, to prevent thewater flow into the socket through the power cable.</p> <p>5. It is forbidden to pull the heateradjustment knob outwards.</p>