The caveat I've found with water bodies is that to get the 'Ooo Wow' effect, you have to use the Reality water plane. I've tried more than a few water props that come with various products, and none convert to quite the same brilliance. I came close with Rubicon's Ocean 1 (now updated to version 2) but it didn't have the ripples and refraction qualties like the Reality plane. 

If you find yourself in a pickle with such a prop, like a pool or fountain, use the base prop as a guide for the Reality water mesh and chuck the original after that. 

Just my two pennies. Paolo's the man to suggest a better solution. ;-) 

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