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.
Applying Chemicals To Your Pool. 1  1. Have the right chemicals readily available. From time to time, you'll be faced with water problems that require aggressive chemical solutions. 2  2. Apply chlorine to your pool. You and your guests won't be too happy with algae and bacteria swimming alongside with you. 3  3. Shock your pool.