Black bottom pools can look spectacular with NO worry of not seeing the bottom (you know...where the snakes are, at least that's what I'm told). So untrue. Both these pools were renovated some time ago and are crystal clear seeing all the way to 7-8' depth. The main drain - which you can CLEARLY see is where the snakes hide - hee hee. Not in these pools. Lovely Pebble Tec!