My pool was completed in October and I have noticed these spots on the bottom for a couple of months. Is this black algae? It's hard to tell with the pebble finish and the water temperature is 62 so I have not gotten in to inspect closer. I have brushed multiple times with no luck.
Before...
Where should the water level in relation to the tile be in a spa with a spillway into a pool? I have always thought the water level should be in the middle of the tile but our was built to have about 75% of the tile showing.
After a month of obtaining quotes, making adjustments, negotiations, etc, we finally have a signed contract for our pool. Time to obtain permits and start the fun!
Teaser photo: