A.S Aquarium fish shop - Heating the aquarium The usual way of heating aquarium water is with one or more heater/thermostats. These are glass tubes with an electric element and thermostat inside
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PYPABL Adjustable Aquarium Heater with Protective Cover, 25W 60W 100W 120W Submersible Heater Thermostat for 10L-125Litres Fish and Turtle Tank (60W for 20-65L) : Amazon.co.uk: Pet Supplies
![Lnder 12cm Mini Aquarium Heater, Fish Tank Water Heater For Small Fish Tank,Explosion-Proof Quartz Glass,Fish Tank Thermostat 25W 50W 75W (Size : 50W) : Amazon.co.uk: Pet Supplies Lnder 12cm Mini Aquarium Heater, Fish Tank Water Heater For Small Fish Tank,Explosion-Proof Quartz Glass,Fish Tank Thermostat 25W 50W 75W (Size : 50W) : Amazon.co.uk: Pet Supplies](https://m.media-amazon.com/images/I/61sAizlElfL._AC_SY355_.jpg)
Lnder 12cm Mini Aquarium Heater, Fish Tank Water Heater For Small Fish Tank,Explosion-Proof Quartz Glass,Fish Tank Thermostat 25W 50W 75W (Size : 50W) : Amazon.co.uk: Pet Supplies
![Inkbird ITC-306A-WiFi Aquarium Temperature Controller Aquarium Thermostats Fish heater thermostat with Dual Heating Socket for Marine Tank Fish Shrimp Tortoise(No Timer) : Amazon.co.uk: Pet Supplies Inkbird ITC-306A-WiFi Aquarium Temperature Controller Aquarium Thermostats Fish heater thermostat with Dual Heating Socket for Marine Tank Fish Shrimp Tortoise(No Timer) : Amazon.co.uk: Pet Supplies](https://m.media-amazon.com/images/I/61C2q+9l94L._AC_SX425_.jpg)