Fusion Nuvo 20 bottom chambers...Anyone use..ok to stick heater?

[machonachos]

Wondering if anyone utilizes this bottom funky chamber (highlighted in green) of the Fusion Nuvo 20.  Im guessing not much flow there...  Would it be ok to stick a heater in there (flow wise)?  

[Tamberav]

I don't like to submerge my heaters in case the gasket goes bad at the top. I do think lack of flow would be an issue for keeping temp stable.

[xthunt]

That’s a dead zone for flow. 

[StevieT]

Super low flow area we have done testing on it.