Who invented ponds?

When can you go in the pool after applying algaecide? What is meaning of stream in marathi? How affective are solar pool blankets for above ground pools? What eats a water soldier? What is it called when swimming and the water pulls you under? Can you get decompression sickness or the bends from breathing nitrogen? How would you prevent a 20x40 concrete swimming pool with a tile finish from cracking after it has been drained and not refilled with water for awhile? Does water in indoor unheated pool stay the same as room temperature? What is the fastest stroke in swimming (butterflycrawl or backstroke )? Which GCSE's did Tom Daley take? How do you remove white stains on your carpet from flood water? In what percentage of fetal accidents have researchers found people were not wearing a lifejacket? What is a water cistern? Where was water polo invented.? Could the pool liner being stretched cause it to pull on the walls causing the walls to bow in three spots even though the pool looked level when it was filled? Why would the pool pump pressure be zero? What do you call a missile that travels underwater? Is pool putty a permanent fix for crack in skimmer? Who is the fastest 13 year old swimmer in Ohio? Who are the best pro surfers in 2009?