Best Seller | Preset Aquarium Heater, 100W, 100 W / 6.4 IN Introducing the Aqueon Preset Aquarium Heater - a must-have for any fish lover! With its sleek and shatter-resistant construction, this heater is built to last. And the best part? No fiddling around with complicated temperature settings - it's preset... ... more Preset Aquarium Heater, 100W, 100 W / 6.4 IN Introducing the Aqueon Preset Aquarium Heater - a must-have for any fish lover! With its sleek and shatter-resistant construction, this heater is built to last. And the best part? No fiddling around with complicated temperature settings - it's preset... Petco.com | | $24.99 go to store |