All AQUA ONE HEATERS AQUA ONE HEATERS Aqua One Premium Glass Thermometer 15cm 10309£3.34 Aqua One Suction Cup – Glass Heater 25-300 Watts, Aquis 2200/2400 (2/pk) 45112£3.49 Fluval Aquarium Submersible Digital Thermometer 11195£8.25 Fluval Aquarium Wireless 2-in-1 Digital Thermometer 11193£9.96