Hi All, I am trying to separate a cloud render into different layers like fg, mid, and bg but am having no luck. I want each layer to affect the lighting of the other layers but be broken out into its own image for later compositing. I tried adding a Render_layer node to the Render node and then putting each set of cloud generating nodes into its own group and then referencing each group in the Object group lines in the Render_layers node but that didn't work, in fact the clouds disappeared from the render. I was hoping to be able to render them all at the same time but even if I have to do each one as an individual render I would be fine with that as long as they still interact with each other. The clouds are set up as volumetrics so is the problem that the Object group categories only work with hard geometry and not volumes? I'm not sure how else to approach this.