When newborns do have problems with hypothyroidism, the problems may include: 1  Yellowing of the skin and whites of the eyes (jaundice). 2  Frequent choking. 3  A large, protruding tongue.  A puffy appearance to the face.
Check chlorine level in pool water at least daily with a pool testing set and add this product as needed to maintain 0.6 to 1.0 ppm available chlorine. One pint of Clorox Bleach-Regular Scent per 6,000 gallons of water will supply approximately 1.0 ppm available chlorine.
Also it is suggested that the chlorine level in the water to be within 1 ppm (parts per million) otherwise it ceases to be effective in killing any developed algae or bacteria. The kind of water ( hard or soft ) also is an important factor while considering pool water change frequency.