However a 50 watt heater is going to be able to heat a tank a lot better and a lot quicker than a 25 watt heater.
25 watt heater for 5 gallon tank.
A 25 watt heater for a 2 5 gallon tank.
Hydor theo 25 watt heater.
5 watt works best for up to 2 5 gallon fish tanks new 21 from 8 69 free shipping on orders over 25 00 consider this amazon s choice product that delivers quickly.
O cmt 1 3 o cmt 2 5 o cmt 4 0 max pressure.
It depends much on the size of the tank.
Having a heater that is too hot for very small fish tanks could possibly kill fish and heaters that are too low on power may not work well for most larger tanks.
80 psi heating capacity.
A 50 watt heater for a 5 10 gallon tank.
The best rule of thumb is to start with 25 watts for every 5 gallons of water which means that 25 watts are the minimum for very small tanks.
Uniclife aquarium heater submersible with thermometer for 5 20 gallon fish tank 25w 100w.
If your tank is 5 gallons then it s entirely possible to use a smaller heater such as 25 watts.
Penn plax aquarium heater fully submersible within 1 degree of accuracy 25 watt heats up to 5 gallon tank 4 3 out of 5 stars 136 6 offers from 13 99 customers also shopped for.
14 5 h x 11 75 w x 10 375 d tank volume.
With the concern of the fluctuating temperatures using the aqueon mini 10 watt heater i did some more research and even asked a question on hubpages.
Some small under 5 gallon tanks can be heated with an external heater underneath the aquarium.
And there s nothing wrong with that.
19 25 h x 11 75 w x 10 375 d weight.
The better the heater can run the more ideal the tank will be for fishes to live inside.
Submersible aquarium heaters are submerged entirely in the water efficiently heating both large tanks and mini aquariums such as betta tanks.
1440 watts temperature ranges.
My research and the answer given resulted in a common product the hydor theo 25 watt heater an adjustable heater for a 5 gallon tank.