Finally got really good interaction with the particles in this shot. I had so much trouble getting the water to punch up like it does in this scene. Apparently domain offset was the issue here, I tried before at 3 meters but had to set it at 7.5 (meters!) which is 750 times larger than the default. On the other hand it also makes sense since the robot is 11 meters high in “real” life.
Probably going to do one more iteration.