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.
Mustard or yellow algae is a rare form of pool algae that is more common in warmer southern areas, but that doesnât mean your pool wonât be infected. Itâs important, that if you spot signs of mustard algae, to act quickly and get rid of it. Mustard algae is rare and often mistaken for sand, dirt, or a stain in your pool.