really purple but looks blue
clear
Blue!! Because pool water is alkaline and alkalis turn red litmus paper into blue.
Yes it makes no difference to what the water looks like. this is influenced more by the colour of the pool and the sky then anything else.
nothin to do with the colour ; it depends on the weather and also the chemicals mixed with it
a pristine deep pool of moving water
Water colour dis-figurations are a common problem and headache for pool owners. Sometimes, we see that there's black in pool water, but have a difficult time tracking down information on what causes it and how we can clear it up. This is because it's not as common of a problem as say, green or cloudy water. However, that doesn't mean it's not as bad. We'd all like crystal clear water, so when it's colour looks a little off we have to worry about staining and so on. These colour changes generally appear when the pool is initially filled or after a shock treatment. This is because if the pool contains metals all ready a shock treatment will oxidize them which makes them easier to see.
A pool with a poor quality of water has probably caused the greenish colour, it is inadvisable to swim in the pool until the problem is rectified due to possible heath issues. The green colour may have come from and algae build up. To solve the problem a through clean of the whole pool as well as changing the water is probably necessary. To prevent this happening again there are chemicals that should be added to the water at regular intervals to kill bacteria and other unwanted creatures. It would be best to contact a specialist dealer in such things to get a second opinion.
Try green or yellow-green. Water is colorless, so any color tiles you have in your pool will make the water appear to be the same color from above. Reflections also influence the color, depending on how you view the water's surface.
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== == NO , but painting the walls a dark colour will make the water look like it is from a swamp. Light colour walls are normal.
If it is there you may see it in the water giving it a green or milky colour. It can also build up on the surfaces of the pool and need to be scrubed off.
If it's a concrete pool, etching of the surface over time and less than perfect water balance can create a surface which will encourage algae growth.Or, if the water itself turns a green colour after shock treatment of chlorine what colour exactly? A blue/green colour can indicate excess copper level.