Water material

[awtivy]

I'm having trouble with the water reflecting blue up onto the ceiling which isn't very realistic. here is an example.

[romullus]

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).

[awtivy]

You're a miracle worker. Looks so much better!