My parents pool has gone a bit green and cloudy despite chlorine and ph levels being in the "ideal" zone using the test kit. They have tried algecide 2 or 3 times and it's made very little if any difference at all. Having read some of these postings looks like a chlorine shock may be the answer but how much??
They have a 8 x 4 meter pool which i believe equals just under 8000 gallons of water and they use a granule chlorine.
Fingers crossed for some help, thank you!
cloudy blue/green water
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cloudy blue/green water
Read this link in the Pool School and also this link on shocking your pool and this chart on the amount of chlorine needed to shock which is based on the Cyanuric Acid (CYA) level. If the CYA level is too high, you might be better off doing a partial drain/refill before shocking since you'll have to get your CYA level lowered anyway if it's very high (above 80 ppm, for example).
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