Smallest controllable heater?

[monkeyCmonkeyDo]

Hi all
I'm looking for suggestions for a small controllable heater.
Currently using the small flat black always on heater. Display is a 3g betta tank.
I like the finnex 800 dial analog controllers.
Thinking about going to a heating pad like for reptile tanks or rocks.
I'd like to put some focus into my tiny little tank. Lol.
D

 

[sfin52]

Hi all
I'm looking for suggestions for a small controllable heater.
Currently using the small flat black always on heater. Display is a 3g betta tank.
I like the finnex 800 dial analog controllers.
Thinking about going to a heating pad like for reptile tanks or rocks.
I'd like to put some focus into my tiny little tank. Lol.
D

Why not get an ink bird controller. I really like ehim. They have some small ones.

 

[sfin52]

https://eheim.com/en_GB/aquatics/technology/aquarium-heaters/thermocontrol/thermocontrol-25?c=1705

 

[monkeyCmonkeyDo]

Thinking I'll use a probe holder type thing to hold the thermometer on the heat controller. The dang suction cup always comes undone. Lol.
I should just drill the dang thing and sump it. Lol
D

 

[guily yalai]

My 5-gallon use the Hygger small fish tank heater 50W, it's the right heater for a small tank 1-6 gallons, the most point I like is the shaped shell which can prevent fish from heating.