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.
To help control algae, follow these simple steps: 1  Scrub the sides of the tank as needed to remove algae, scrub immediately before water changes, so that free floating algae can be removed with the dirty water.2  Additional free floating algae will be removed by your mechanical filtration. This can remove free floating algae, but will also remove phosphates and Nitrates that contribute to algae growth. 2  Make sure that the tank receives no direct sunlight. 3  Direct sunlight, even for a short time or only on part of the tank will encourage algae growth, especially where the light hits the tank.