Cycles Water into a glass simulation

Hello this is my first post and I need help with a cycles render. Whenever I render my picture (Not Animation) Some parts of the water are black. My sky is black so I tried setting it to white and it doesn’t help because then it looks a light black and grainy. Here’s the render result: https://www.dropbox.com/s/2t29jmwjtio2lbz/render10008.png

How do I make the water not appear black anymore. It’s due on Monday.

Increase the ray depth, or how many bounces the rays can travel.

I will try that and render the same thing and post it again

Also I’m kind of new to blenders features so where is ray depth in blender 2.68?

I’m sort of new to some aspects of blender so where is the ray depth setting?

You must rise “Min bounce” and “Max bounce” number both >6, maybe even more, it is in Integrator Property panel.

Than you storm! I tried it and it work just as expected! thank you.