When I try to render a clear plastic container filled with water I have wierd lines appear (as seen in the attatched photos). I have tried changing the clear plastic material used for the container and that has not made a difference. (I have tried using polyproylene and polycarbonate)
Please could someone help me on how to remove these lines? I have made sure that my scene contains lighting but the problem remains. Also it may be worth noting that a similar (but different) line problem occurs when i dont have water in the container.
With water (polycarbonate and ripple water on maximum).
with still water and polypropylene plastic on good. (the problem was worse on this render).