RSK LC25W steel fish heater
The RSK STEEL fish tank heater is designed to be placed under the water level in your aquarium to maintain temperatures that range between 22-30C degress or 71-86F.
Depending on how many litres your fish tank is depends on the size of the heater that you buy.
Ratio 1litre of water = 1 watt of heater.
#Place heater into the water and then plug it in and switch it on. Then if you wish to take the heater out of the water then switch it off, let it cool and then take it out of the water. Rather be safe so that the glass does not crack by accident.
#Plug in all electric appliances into surge protection plugs