by Rob Cox, July 28, 2011
Get your swimming pool out of the Cloud
Cloudy pool water has caused quite a stir lately. Last month in Boston, a young woman laid at the bottom of the a Boston swimming pool for two days, until some late night fence jumping teenagers discovered her body floating in the pool.
Lifeguards on the scene, all of whom have since resigned, closed the deep end of the pool just minutes following the drowning for safety reasons; unaware that the unsafe water condition had already claimed a life.
Cloudy or turbid pool water can also present other unhealthy problems. In most cases, cloudy water not only is unsafe for diving because you can't see the bottom and unsafe for swimmers because lifeguards can't see the bottom - but also because the water is likely to be unsanitary.
Cloudy pool water usually indicates insufficient filtering and/or insufficient sanitizer. Swimming in cloudy water could mean an increased risk from waterborne pathogens such as E-Coli and Pseudomonas, or the chlorine resistant protozoan known as Crypotsporidium, or "Crypto" for short.
How to Prevent Cloudy Pool Water:
How to Correct Cloudy Pool Water:
If your Cloudy Pool Water just won't seem to correct:
In extreme cases, where I just can't seem to clear the pool, no matter what I do, I like to use a flocculent and "floc" the pool. There are many commercially available pool flocculents, or you can use Alum. Also known by it's label name, Aluminum Sulfate can be a very effective flocculent, but leaves a jelly-like substance on the pool floor, which must be slowly vacuumed to waste.
To use alum, first balance the water chemistry, with pH on the low sie (7.2). Clean all debris from the pool floor and surface. Broadcast over the surface - 4lbs of Alum per 10,000 gallons of pool water, followed by an immediate treatment of 2lbs of shock per 10,000 gallons. Shut the pump off and keep it off overnight. Vacuum to waste the floc on the floor of the pool.
Keep your swimming pools clean and clear this year! Cloudy pool water proves itself over and over again to be dangerous to swimmers and divers. If you cannot see the bottom of the pool, close the pool immediately, and do not allow use until you can clear up the pool water.
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