Pools - Tabletop Terrain (Simple)

I use a cheapish foam for my D&D boards, so I needed an alternative to the Openlock options for pools found in a dungeon. I modeled these entirely in Solid Works. I made a squiggily spline to make the water and revolved it. It doesn't look bad, but it looks more like a portal than a pool at the moment. I'm hoping painting it will tone down the rings a bit.