So peaceful! Oriental gardens must have 3 elements symbolizing heaven, earth (and man) and water. The rock represents earth (island), the ripples represent water, and usually a tree represents heaven (higher than the other two elements) So I was taught.
Surface aquarium plants are particularly useful: They leach nitrates (fish waste) directly from the water column via their beautiful trailing root systems, and they provide a sense of safety and shelter for your fish. But beware placing them in aquariums
the Leidenfrost Effect and When Water Flows Uphill - Researchers test ridged surfaces and temperatures in order to control the movements of hot water creating the interesting the Leidenfrost maze for water props (used to excite people about physics)