Heater Size

[orange shark]

I've always been confused about heater size, can anyone give me a spec as to what wattage is for what tank please?

If your not able just a size for a 29 gallon would be nice!

Thanks, orange shark

 

[Bloo]

As a general guide:

25 wt : 20 ltrs (5 gal)
50 wt : 35 ltrs (9 gal)
75 wt : 50 ltrs (13 gal)
100 wt : 65 ltrs (17 gal)
150 wt : 100 ltrs (26 gal)
200 wt : 125 ltrs (33 gal)
250 wt : 150 ltrs (40 gal)
300 wt : 200 ltrs (53 gal)

 

[orange shark]

thanks

 

[Bloo]

Edit to add gallons. So you should go for a 200W ideally.

 

[rabbut]

For small (under 10 degree) differences between target and room temperature, 1 watt per litre is the guide
For larger, as per Bloo's specs above. A 100W would do it for adverage room temp and a tank temp of 26c. 150W if your room is cold or the tank needs to be 30c. A freezing room or very warm tank may need up-to 200W

All the best
Rabbut

 

[orange shark]

looks like im getting a 100 watt one seen as my tanks 20 gallons not 29 lol