Excellent, the right two items that you will need to acid-wash your unit. I would recommend doing it twice back to back to be sure that you did a complete wash. Add 1 cup of Muriatic Acid to 4 cups of water in a small bucket and then pour it into the unit. Remember, water first. Never add water to acid. Wait 15-20 minutes and repeat for the second time. Afterward, rinse with your garden house under low pressure, so you don't damage inside cells.

Excellent, the right two items that you will need to acid-wash your unit. I would recommend doing it twice back to back to be sure that you did a complete wash. Add 1 cup of Muriatic Acid to 4 cups of water in a small bucket and then pour it into the unit. Remember, water first. Never add water to acid. Wait 15-20 minutes and repeat for the second time. Afterward, rinse with your garden house under low pressure, so you don't damage inside cells.