A common "green" algae that can be free floating or wall-clinging. Ranges in severity from patches on walls and bottoms to entire pools. Can clog filters and create surface damage if left unchecked.
Forms in cracks and crevices on pool surfaces, especially plaster finishes. Known for protective coatings that make it impervious to normal chlorine levels.
The most common cause of increased chlorine demand is a high level of contaminants.
Hazy, murky appearance. Caused by poor filtration, inadequate circulation, water balance, low sanitizer levels and/or lack of routine oxidation.
Foam is caused by elevated levels of algicide or a foaming algicide in pools with jetted returns, attached spas or water features. Foaming can also be caused by a foreign contaminant such as soap or oil entering the pool. Foam should dissipate over time, but the use of AntiFoam will help clear the foam much more rapidly.
A chlorine-resistant form of green algae. Often resembles dirt or sand on bottom or sides of pool. It can be brushed away very easily, but returns quickly. Although it can create a large chlorine demand, it has been known to survive in high levels of chlorine.
Scale formation is caused by high calcium hardness.
Discoloration of pool equipment and surfaces caused by contamination, sunlight and metals in pool water.
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10715 York Road
Cockeysville, MD 21030
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