Dead algae are an unsightly menace that threatens your pool’s water quality and appearance, not to mention being difficult to remove if left alone. They also leave behind organic stains which are more difficult to get rid of than metal ones; proper cleaning and maintenance is therefore key in order to keep it looking great all season long.
Before taking any additional action, double-check that all aspects of your pool’s sanitation, filtration and circulation systems are functioning effectively. Furthermore, conduct an in-depth chemical analysis and correct any imbalances which could be contributing to dead algae build-up in the pool.
After you’ve addressed any underlying chemical issues, the next step should be killing off any free-floating algae. You have two options for doing this – either use granular chlorine or use a chlorine shock product with algaecide attached – brush your walls after adding algaecide for two or three days and allow it to work, then brush again while vacuuming up debris before testing and rebalancing chemicals as soon as possible.
Once algae die, they turn white or gray and eventually sink to the bottom of your pool. At this stage you can determine whether they’re still alive by giving them a brush: if they smear easily it indicates life while easily brushing off indicates death.
Once the algae have been eliminated from your pool, you will need to vacuum and filter. A flocculant can also help clump together dead cells so they’re easier for filtration systems to catch.
Be sure to run your filtration system for at least 24 hours after brushing, shocking, or applying algaecide so as to ensure all the algae particles are trapped and removed from the water. In addition, regular backwash and cleaning is important so as to prevent dead algae resettling on the surface of your pool water.
After you’ve vacuumed and brushed your pool, any dark spots left behind on its walls or bottom may be organic stains that need to be scrubbed off with enough elbow grease. Or try using Serious Stain Remover which specifically targets organic stains without harming other pool liners; it will help ensure you maintain optimal condition of your lining for years to come! This product should help keep it in pristine condition to help avoid further organic stain formation in future.