[Cwickham]

so i purchased a 200watt inline heater today by hydor... its for a 18 gallon tank though... it is the smallest one i could find... will it change my water temp too quickly

 

[distrbd]

The rule of thumb for choosing the right heater wattage is five times the size of the tank so in your case would be a 100 watt.
There should not be a problem with using it in your tank except if its a cheap heater and prone to fail then it just might fail in ON position in which case can cook your fish if its not caught in time.

 

[Cwickham]

it was not cheap at all... it was 80dollars canadian... but is the rule of thumb the same for inline heaters?

 

[eklikewhoa]

Yes but having more is not a problem unless it goes bad, supposedly the hydor is a good heater though.

 

[distrbd]

Right now I'm using a 200 watt heater in a 25 gal.tank,so if I were you I wouldn't worry about using that heater specially its a good quality one,just keep an eye on it.

 

[Hydro]

Cwickham, I'm using the same heater on my 20g without problems.

 

[Cwickham]

awsome thanks everyone

 

[Naja002]

I used a 300w on a paludarium that held ~20-25g and had no problems--rock solid. roud:

HTH

 

[slickwillislim]

I use the 200w hydor on a ADA Mini M its about 5g. I haven't had any problems yet. I did have a Hydor inline fail on me and heat my 60g to over 90 though. Hydor replaced it for me and gave me a free extra one so I sure this doesn't happen very often. I haven't heard of any other people having problems with them so I wouldn't worry about it. I would buy another one again since I hate having heaters in my tanks.