Can you explain how these observations fit as to the water canopy theory?

If there was a mile or so of liquid water completely surrounding the earths surface--then the earth would have had to have been completely dark. Small amounts of light are absorbed by water--is the reason at a depth of 200 feet or so--it's dark in the ocean--the light is absorbed by the water. A 200 foot thick layer of water in the canopy is insufficent volume to flood the world. If it were water vapor--then the earth would have to have been completely covered by cloud--and an ice age raging on the earth below. Too cold for flooding in this scenario. Likewise if you utilize the came out of the ground theory--it would have exited to the lithosphere as steam--and they earths inhabitants all scalded to death. Can anybody explain where all the water came from that doesn't invovle the death of all life on earth including those on the ark?