I am doing a smaller rock bubbler. Maybe 5 ft in diameter, with rock boulders with probably 2-3 of the rocks drilled, not the columns. I would like input on the perfect set up to make this feature have the right noise and have some splash. Again, this will be a smaller feature. I know alot will depend on the rock, but can someone give me a break down on components needed such as pump size, liner, ball valve, type of drill for core drilling, vault information...basically complete setup.