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.
Brushing will remove dirt and spores, and prevent algae from taking hold. Brush the walls, floor, and steps of the pool. Once youâve completed your brushing, vacuum the pool to dislodge and remove any spores that have settled on the bottom. Use a steel brush for concrete or plaster pools.