I’m having trouble with the water reflecting blue up onto the ceiling which isn’t very realistic. here is an example.
It isn’t realistic because your water material is very unrealistic.
Try something like this instead:
diffuse level - 0
translucency fraction - 0
reflection
level - 1
IOR - 1,33
glossiness - 1
refraction
level - 1
IOR - 1,33
glossiness - 1
color - 255, 255, 255
absorption color - 225, 255, 255
absorption distance - set it to your likeness
For these settings to work, your water mesh must to have volume (box).
You’re a miracle worker. Looks so much better!