External Heater For 300l (79g)

[tata]

Hello,

I have today a 120L/31G aquarium with a external heater, a Hydor ETH 200W.
It works perfectly fine.

I will upgrade to a 300L/79G aquarium. I pretend to have two external heaters.
The aquarium will be on the living room, where the temperature can reach 17ºC/62F on the cold days. The aquarium temperature is 28ºC/82F.

Do you think I will be ok, with 2x Hydor ETH 200W ?
Or should I buy a 300W?

Specs:

Thank you!

 

[Ps3Steveo]

Well I'm using 2 x 300W on a 600L so don't see why not. Maybe someone with more experience with these could help a little more tho.

 

[tata]

Well I'm using 2 x 300W on a 600L so don't see why not. Maybe someone with more experience with these could help a little more tho.

According to the product specification, each 300W heater should handle 300L, maxim.
I guess you are on the edge.

What is your aquarium temperature, and the room temperature on the winter days?

Thanks

 

[Ps3Steveo]

Winter room temp will be 18c and tank temp will be 28c not set up yet for long period of time but been tested.

 

[tata]

Winter room temp will be 18c and tank temp will be 28c not set up yet for long period of time but been tested.

Nice. In that case I shouldn't have problems using 2x200W for 300L.

Just one more question, do you have the 2 heaters in "serie" on the incoming or outgoing hoses?

 

[Ps3Steveo]

I tried it out with one on each filter.