The most common cause of a goiter is lack of iodine, ...Even with the right amount of iodine, the thyroid gland can swell, creating a goiter. This can occur in any type of thyroid disease, including hyperthyroidism, hypothyroidism, thyroiditis, and thyroid cancer.
Shock treatment powder bags. Skim off whatever algae you can from the pool using a pool skimmer. Scrub the inside edges and walls of the pool with an algae brush to dislodge stuck algae. Purchase sufficient amounts of algaecide, as noted in the instructions on the bag, that match the total gallons of water in the pool.
2. Depending on your type of filter, clean or backwash the filter to remove debris and contaminants. You will want to set the filter to run 24 hours a day while treating your pool for algae. 3. Brush the pool walls thoroughly, especially those areas with visible algae blooms. 4. Be sure to use a brush that is safe for your pools. Wire brushes are great for plaster and gunite pools, but should never be used for vinyl, fiberglass, or tiled pools.