What size heater should I go for

[bluebluecow]

Right Ive been waiting to resubscribe to practical fish keeping once they did a good opening offer. This month its a fluval E seris Advance heater.

So I will either use it on my 20G tropical tank or 24ish G marine tank to be set up yet, so what wattage ither 100w or 300w

Liz

[dragoonwoman]

I'd go with the 100w. I have a 100w Stealth heater in my 35g tank, and it holds the set temp perfectly.

I always worry that a more powerful heater would "cook" the fish, if it malfunctioned.

[rangur1]

the 100 watt is plenty, you require around 4-5 watts per gallon.

[TC713]

100W will be perfect. I used my 100w Stealth on my 20L and now its on my 29g. No problems.

[Deleted User]

Just chiming in to agree that the 100w will be just right.

[argentmartine]

Hi.
I also use the same as100W will be perfect. Can anybody suggest me the relationship between water content and heat as I am planning to increase no. of fishes and so water with them ?