Aquarium steel heater – 200 w – sobo – 2 to 3 feet aquarium – imported – auto on/off – you2buy quality product- original packing -we dispatch Sobo brand steel hi quality heater only. It’s a steel heater. Display picture not for sale – we dispatch Sobo brand heater degree adjustable suitable for our temperature climate 28 degrees is best for all fishes. You have to use it fully and fully dipped submersed inside the fish tank water it is shockproof, although we advise to switch off before doing any work inside your fish tank. Do not use outside of water. When fixing inside your tank please see that the bottom tip of the heater does not touch the bottom sand or aquarium decorations like toys, plastic plants. Etc. You can fix the heater inside the water of your tank in horizontal, vertical or slanting position. You can use the two sucker cups provided at the rear side of the heater, fix it on your tank glass walls. For cleaning and maintenance work in your tank, remove the heater after switching it off 5miniutes. The running heater will get cool down by this time, you can gently unfix it from the sucker cups and remove it and place it carefully on a dry piece of cloth. If the heater by chance gets cracked or broken at some places, please do not use it anymore, it’s not repairable and does not attempt to use it, throw it away. Because this item is being used inside the water submerged fully in the water. Need be please buy a fresh one. Fix a thermometer to monitor the heat level inside your tank water when the heater is running. This is an automatic cut off heater — it will automatically cut off when it had reached the heat level you have fixed on it. Therefore you need not to switch off the heater from the electricity. When the heater is running an indicator light will glow — which you can note. This heater is good and useful for fish tanks = in air-conditioned avenues, rooms, places, winter climate, fishes under.