Cloudy Pool

millargs888

Member
Sep 30, 2017
15
Philippines
Pool Size
40000
I think I need help understanding what is happening.
I have an 8 metre x 4 metre small kidney shaped pool, tiled, approx 40,000 litres.
Using a 1 1/2 hp pump and Hayward VL240T sand filter, with glass media.
Flow through is excellent, with water turnover every 11/2 hours approx.
Recently I have emptied the pool, cleaned using diluted acid ( 2:1 ratio ),
power washed the walls and floor, and continuously flushing through the pump and filter.
Back washed the filter, and flushed again until the sight glass is clear.
Filled the pool, from a deep water well, which isn't the best water in the world !
Tested and treated to get the ph levels and chlorine levels just right.
The pool was looking good, crystal clear.
We are in the Philippines therefore the pool gets quite a lot of direct sunshine, which can burn off the chlorine quite quickly, however, I test often and treat as necessary.
Yesterday we had friends over with about 12 kids who spent hours in the pool until well after sundown.
I love seeing the kids enjoy themselves while getting good exercise.
Came out to the pool this morning and it is cloudy, with a milky/white sort of hue going through it.
I can still see the pool drain, but only just.
Why would the pool go cloudy like this in such a short period of time ?
Any help would be greatly appreciated as I am not totally up on all the technical aspects of running a pool.
 
Tested and treated to get the ph levels and chlorine levels just right.

Cloudiness can be a few things.

How are you testing? What does "just right" mean to you?

If you can perform a full set of tests and post the results, that will help make it possible for people here to diagnose the problem.
 
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We'll take it from your fill as beyond is unimportant. You talk about chlorine and PH but no mention of other important levels such as CYA aka stabilizer. Without stabilizer the chlorine hasn't a chance with the strong sun you speak of let alone 12 kids that can do I a pool in even if all the levels were good before. You'd need to slam a fresh fill too just to be sure nothing exists in the water eventhough to the naked eye all looks swell.here are some links perhaps that will give you a better understanding to pool care.
Pool Care Basics
Overnight Chlorine Loss Test
SLAM Process
FC/CYA Levels
PoolMath
FC/CYA Levels
Test Kits Compared
 
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