Hi all , I made a project wich involved a house most of wich was hidden under an openable pond. Here is the shot : https://youtu.be/nYQvcJjZ9Tg As you can see, when the characters are downstair, so under the surface, I’ve cheated with the water reflects you normally have under water. But I have noticed that such an effect is not possible , and it’s soooo bad 
So , I created a plane with an animated black leveled texture wich projects shadows all over the space, down. Is there any meaning to have a clean effect instead what I’ve choosen ? I don’t know if I’m clear , explaining such a problem with a rusty english is quite difficult lol. Thanx a lot !