Heater Size

[brendac]

What size watt heater do I need for a 125 gallon...

 

[nofish4u!!]

I have a 120g and have 2 heaters (one on each side of the tank). I believe they are both 150.

 

[ryanhayes9]

i think the rule is 5 watts to a gallon

 

[import]

it all depends on what the room temperature is and how many degree of temperature you are trying to drop or raise. i have a 250 watt titanium heater and does great for my 125gl. just read the back of the heater's box and it will have the ratings on it.