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 walls and floor of the swimming pool. Brush vigorously to remove as much of the algae as possible. This will reduce the amount of time it takes to kill and clear the algae bloom. Pay special attention to the steps, behind ladders, and other nooks and crannies where algae tends to gather.