What heater for pico 4 gallon?

[xxkenny90xx]

What are you guys using on your pico tanks? I have a couple of those little 50w preset heaters but im think that's too big? Is 25w better?

 

[splitting_lanes]

I’d follow this:

https://www.hamzasreef.com/Contents/Calculators/HeaterChillerSizing.php

 

[Blue Ring Octopus]

The smallest Cobalt Aqua Therm. Nice thing about them the wire does not force the heater to lay a certain way.

 

[xxkenny90xx]

Thanks guys. Ya the the 50w is definately too big. The heater I'm replacing is a 10w that was cooking the tank! I think I'll with the aqua therm like @Blue Spot Octopus said, I hear those are nice.

 

[Blue Ring Octopus]

I have a 25 watt in my 7 gallon cube. Check out this heater
https://www.bulkreefsupply.com/mini-therm-submersible-heater-cobalt-aquatics.html