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.
Brush the pool walls, steps, and floor at least once a week (more if necessary) to prevent algae growth from forming in your pool. 5. Find the right brush for your pool. Brushing and scrubbing your pool walls are necessary to prevent algae growth, but the wrong kind of brush can do serious damage to your pool surface.