I was playing on the FTB Revelation modpack and when I put down the active coolers in my fission reactor, I started having some issues. The only coolant that was being actually consumed was Resonant Ender, while other liquids like water and gelid cryotheum were not. I tried rebuilding the reactor, reloading the game and all of that, but nothing really changed.

@thecatinthebag Are these active coolers respecting their passive counterparts' placement rules?

Ah, they weren't. Guess I'm illiterate. Either way, thanks for reminding me that and sorry for wasting your time.

No worries!