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.
Without proper filtration, the algae will not be able to be removed from the pool. 3. Thoroughly brush the pool. This will help remove algae from surfaces, where it is more difficult to treat. 4. Apply a chlorine-based shock to your pool such as Power Powder Plus, Chlor Brite, or Liquid Chlorine.