I am in the process of making a swimming pool and would like to give it that tropical feeling (you know the kind with the coral and water plants and such), but don't know how to make the water transparent enough so that the terrains are visible through it. I have come across a couple of sites that have pictures relating to what I have described,how do they do this? I tried to increase the tranparency of my water, but it looses its color and looks crappy. Can someone please help me?