Why did my pool turn blue?

beachbabeBrandy

Gold Supporter
Mar 11, 2023
29
Pittsburgh
Pool Size
7610
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-20
I bought a gray pool so my water would be turquoise. Why did my water turn blue? Pool and all equipment is 2 weeks old.
 

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I bought a gray pool so my water would be turquoise. Why did my water turn blue? Pool and all equipment is 2 weeks old.
TFP water will never reflect turquoise, it is completely clear. On a sunny day it will always reflect blue. On a cloudy day, as in the pictures, it will be a blue/green. If the water actually has a color, there is a problem.
 
TFP water will never reflect turquoise, it is completely clear. On a sunny day it will always reflect blue. On a cloudy day, as in the pictures, it will be a blue/green. If the water actually has a color, there is a problem.
It did not have a blue color when we filled it. Now the water itself is visible blue. That is what I was trying to show in the two pictures....the change from turquoise when it was first filled, to blue, now.
 
Not sure if this would be a definitive explanation, but in Post #1 the pool appears newly installed and the water is not as clear. In Post #2 the pool appears to be more established with coping now completed. The water looks more clear in Post #2 and perhaps better balanced. I wonder if some of the light/color spectrum differences might have been influenced between the two time frames due to the new water with suspended particulates still being balanced/filtered? Of course the sun's lighting/UV and cloud cover at the time of each pic can also influence how we perceive our pool colors. Just a thought.
 
It did not have a blue color when we filled it. Now the water itself is visible blue. That is what I was trying to show in the two pictures....the change from turquoise when it was first filled, to blue, now.
Of course it's all gradient of greys, but typically, grey reflects blue back at your eye and lighter colors reflect more turquoise to green. My light grey reflects blue in bright sunlight and turquoise in overcast. This can change over the course of any day from dawn sun to high noon to dusk. Your pics appears to be overcast condition.
 
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