Good Apex Compatible heaters

[Alex's Nano Reef]

Gonna be buying a new heater soon. But I’m looking for recommendations on heaters that are comparable with the apex that are also small. I have a 20g IM Nuvo tank so I’m sort of limited to the amount of space for the heater. I’d love to hear your experience with your recommendation aswell.

 

[Pistondog]

Many of use use eheim jaegers, controlled by apex or other top level controller. Set the eheim a couple of degrees above the apex so it will shut off if the apex does not for some reason.

 

[vtecintegra]

Ehiem are some of the largest (longest). Check the length before buying.

 

[Lps_lover12]

I use eheim hooked up to an InkBird controller which then plugs in to my apex and it works good. The eheim are very long in size I find, I’m looking at upgrading to a set of Finnex titanium heaters

 

[WestMI-Reefer]

I use eheim hooked up to an InkBird controller which then plugs in to my apex and it works good. The eheim are very long in size I find, I’m looking at upgrading to a set of Finnex titanium heaters

I like this set up. Lots of redundancy to catch a problem. And the Titanium is the a good bet, I’ve accidentally cracked a couple cheap heaters over the years.
All heaters will be controlled with apex to at least turn on and off and keep a temperature range.