different water?

my 30days trial for pro version of unity has expired and the water that i used got an error it seems that its texture changed.

is the water in unity pro version is different from the water of unity free version? what if i use the water in unity pro and the 30days trial for pro license expired? will it affect the texture of my water?

Taken from http://unity3d.com/support/documentation/Manual/HOWTO-Water.html

Unity includes a basic water, while Unity Pro includes water with real-time reflections and refractions

More info on the linked page

The pro version of the water uses pro only feutures so the pro version of the water wont look right as the some features are disabled...