Small, sturdy peaceful & colorful fountain! Water does NOT spill from pool. Good adjustment 2 have enuf waterfall 4 sound yet, no spillover. The Blue discs r ok for getting some Blue in there but, I'm currently in love w/SmallGreenPuries! U really can use anything! NONE of my cats AND DOGS will drink outta ANYTHING but, this MovingWaterfall. Do NOT put small or dirty pieces over light. OH, AND....Casts a BEAUTIFULLY MYSTERIOUS Shimmering web of water to look at! OHM