Algae in a pool can cause cloudy water, slippery pool surfaces on steps and ladders, pH rise, filter blockage and excessive chemical consumption. Algae can occur due to poor circulation, poor filtration, improper chemical maintenance, or poor housekeeping and environment. Algae do not cause disease, but their presence is not inviting to swimmers.
- Green Algae - Tend to be free floating, making the water cloudy with a pea-green color.
- Mustard Algae - Cling to walls, leaving the water clear unless they are physically disturbed. When brushed, mustard algae appears to be a fine brown powder.
- Black Algae - Clings to walls are are very difficult to brush.
- Adjust the pH into the range of 7.2-7.4 using hth® pH increaser or hth® pH decreaser. Wait at least one hour.
- Shock treat the pool with an hth® shock product.
- Brush pool walls thoroughly with an 18" curved wall brush.
- Run filter for at least 24 hours until water clears.
- Vacuum the pool.
- Backwash or clean the filter as appropriate.
- Add an hth® algaecide.
- Maintain pH levels between 7.2 - 7.8.
- Shock treat the pool weekly.
- Use an hth® algaecide weekly.