Our 20k gallon pool is just about done. the pebble tech was completed and we began to fill the pool yesterday morning. Electricity will not be hooked up until tomorrow so we can't run anything ATM. The water starting turning green almost immediately during fill. Is it normal for the water to turn green this fast without everything up and running? Should it clear up quickly once we have power? Do I need to keep the teenagers out of the pool for now? Thx