Dark Green Swimming Pool Water
Lower your pool s ph.
Dark green swimming pool water. Draining and cleaning allows you to acid wash plaster pools only to brighten the finish and remove stains. A pool s free chlorine level should be between two and four parts per million. If the pool turned green immediately after shocking the pool then there is an imbalance with other chemicals or something else has been added to the water that should not have. If your pool is dark green meaning you have a larger algae infestation we recommend shocking the pool three times.
And if the color of your green pool is reminiscent of a dark spooky swamp shock it four times. The very word stains can bring pool owners to their knees with a bucket of soap and bristle brush. When you shocked the water and it stayed green you oxidized the metals in the water. If the pool has been brushed and shocked it will take a few days to filter out the green and for water clarity to improve.
Unless the water has a sufficient level of free chlorine algae will grow and make your pool green and cloudy. Algae growth turns a pool green and algae grows when pool water lacks chlorine. The reason your pool is still green is most likely because of metals in the water. Dark green pools that are not drained and cleaned often have stains all summer.
When your ph is low or balanced pool algae can t repopulate. Rob at dengarden says if you can see at least six to eight inches below the surface of the water most likely the pool can be treated chemically. Even if you normally use non chlorine shock you must use chlorine shock to kill algae. Sometimes being a pool owner is a hard knock life.
Chlorine is a chemical added to swimming pools to kill bacteria that can build up over time and lead to a discoloration of the water. In order for pool algae to thrive your water s ph has to be pretty high 7 6 and up. Which is why lowering your water s ph is the first step in getting rid of pool algae. Then place some sequestering agent in the water and finally a metal eliminator try culator metal eliminator.