If you take really good care of your pool - by keeping the chemicals in balance, and cleaning the filter, keeping debri and algae out - then you shouldn't have to drain and do an acid wash more than every 5-7 years. When you do need it though, you must use a professional, if you want the job done correctly and to protect your investment.
WHAT TYPE OF ALGAE AND STAINS WILL ACID WASHING REMOVE?
Whether you have a plaster pool or a Pebble Tec® pool, different types of algae and staining will occur and cause your outdoor oasis to look dirty.
Magnesium Stains
Depending on the type of water you fill your pool with, magnesium may be present. Too much magnesium in your pool can cause discoloration such as pink, red, and even black. Magnesium stains can be removed through pool acid washing.
Copper Stains
Similar to magnesium stains, copper stains also occur when your pool’s source water comes from well water—typically high in all minerals. Copper stains create blue, green, and black staining in your pool, however, can be removed through pool acid washing.
Hard Water
Hard water stains, also known as scum, are created from calcium deposits. These deposits can often be found along the edge of your pool where the tile meets the water. Hard water stains lead to cloudy water and a lower (and unsafe) water pH level. Hard water stains can also be removed through pool acid washing.
Algae Growth
Algae growth is the most common type of staining that pool owners look to get removed through pool acid washing. Lack of pool cleaning, improper pool pH balance, and low pool circulation are all causes of algae growth. The algae growth can cause health issues along with clogged pool filters. Pool acid washing can help remove algae growth and prevent any further damage from occurring to you or your oasis.
