Ink bird/heater options for fluval 13.5 evo

[Hankcorals]

Hello all,

I am setting up a new evo 13.5 and want to upgrade the heater. My question is what smaller heaters work with the ink bird? I have an Aquael 50w on it now while tank cycles but want to put an ink bird controller on the tank and not sure what heat source would be best in that tight chamber. Please advise fellow reefers! Thanks in advance for the help

 

[blaxsun]

Honestly, unless there's a reason you need to upgrade your heater I'd just stick with the one you have in the back.