Great, thanks. From a bit of digging, it seems like the fans use 0.18 Amps each, which comes out to around 150W at 208V in total for all 4 fans.
I'll probably go with DCX for the immersion kits and they provide the fan emulators. DYOR but I think these will work:
https://www.amazon.com/Simulator-Emulators-Submersion-Assembled-Eliminator/dp/B07KTYT55S