Black Dots On Pool Floor

We think the bacteria can be washed into your pool area by flooding rains or when a septic tank overflows.

Black dots on pool floor. Black algae have deep roots that work their way into. It often starts in areas with low circulation and will not brush away like other algae. Pool stains on the wall or floor of a swimming pool can be caused by metals in the pool water or by an organic material left in the pool. I have been fighting w black algae for several weeks now on the floor of my pebble tech pool i wire brush 2 3 times a day so much so that i have loosened alot of pebbles i scrub chlorine tabs directly on spots have my fc up at 7 and have done 2 diff treatments using 2 diff brands of 32oz black algaecides and of course cleaned filters prob every 3 4 days.

Sometimes it can be fairly easy to get rid of stains but other times those hard to remove spots can take a bit more than a simple scrub. Brush daily for a week with the proper brush for your pool paying special attention to algae affected areas. It appears as dark black spots on the walls and floor of the pool and is slippery to the touch. Black algae in pools is similar to that which can be found in between bathroom shower tiles and on silicone seams near the bathtub.

The algal spores often take up residence on your pool walls and floor when it is empty and grow once it has been refilled with water. If there s only a small amount of black algae in the pool you can probably get away with backwashing your pool filter for sand or de filters or rinsing the filter cartridge. If you have black or grey cloud like stains on the floor of your in ground vinyl liner they are most likely caused by bacteria that is living in the ground under your pool. I mean we.

The protective layer that forms on black algae makes the algae otherwise impervious to regular sanitizers so you must brush the algae to break through this layer so that chlorine and algaecides can kill the organism. Your first clue to diagnosing a pool stain is to check out it s color. Algae growth is caused by an imbalance in the ph of the pool from wind and rain so maintaining regular chemical treatments will help keep black spot at bay. This type of algae forms in a layered structure with the outermost layer protecting the lower layers.

Black spot algae is unique because it grows in the walls or floor of your pool. If you have black algae in your pool you have black algae in your filter. It will flourish in a warm pool with lots of sunny days. Any algae including black algae tend to bloom in bodies of pool water with a high ph level low chlorine bad circulation and filtration and not enough chlorine.

If the algae problem is extensive use a filter cleaner rather than just plain water.