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.
Like yellow strains, pink algae requires a high level of chlorine to treat effectively, and for best results, throw in all of your pool toys, floats, suits and cleaning tools into the pool during algae treatment. Removing ladders and pool lights for a good scrubbing is also good practice to prevent reinfection.