Remember, if black spot stains are left for longer than 2-3 years, the algae roots can sometimes penetrate the pool interior and discolour your pool surface permanently.
Even if the black spots disappear, there may be “roots” beneath the surface, which is why scrubbing alone won't take care of the problem. Use chlorine tablets. Break a tablet in half and rub it directly onto the surfaces affected by black algae. This will help kill the roots and prevent it form growing back.
Method #4: If your budget allows and your pool is full of black spots, you can go for replastering option. This is the most effective method to permanently get rid of black algae. Make sure you ask your pool cleaning to properly clean the pool tiles to remove the black algae spores completely.
However, although the black algae itself won't cause illness, it can attract insects or harbor organisms or harmful bacteria like E. coli, which can make swimmers sick. It's best to avoid swimming in a pool with black algae until you've eradicated it.
To get the shock dispersed so it can do its job and kill all the black algae in your pool, run the pump for 24 hours. You may come back to cloudy water, but that's perfectly normal.
In most cases, our quality algaecides will clear your green pool water within 48 hours and completely remove the black spot, green algae and mustard algae within a few weeks.
Other Ways to Recognize Black Algae in Your Pool
It is attached to rough surfaces and will not freely float in the water. It will not come off the wall easily with a pool brush or vacuum. If you manage to scrape it off the wall, it will likely return time and time again without proper removal.
Triple Shock Your Pool & Scrub Again.
In short, you will shock your pool to quickly raise the level of chlorine in your pool and then scrub away at the algae (you will then repeat these steps). Ensure that you shock your pool at night and leave your filter on 24/7 until the algae is completely gone.
In most instances, there is enough chlorine in your water to kill the black algae before it has a chance to take root in your pool and bloom. In times of very heavy rains, however, the pool's chemistry is overrun by the amount of rain and the black algae has a chance to grow in the pool.
Don't drain your pool to remove black spot algae because it will simply come back again. Draining the pool is not effective because the algae also live in the pipework, solar heaters, filter and pump.
Thanks to a copper complex that's designed for hard-to-kill algae, Applied Biochemists Black Algaetrine is the best algaecide for black algae. This algaecide coats and penetrates to prevent new growth in all pool types.
Chlorine is still one of the most effective killers of algae so doing a super-chlorination of 10-20 ppm of chlorine can go a long way towards wiping out the algae. Liquid chlorine is an ideal shock for algae because it is fast acting and does not add cyanuric acid (CYA) or calcium to the water.
Algae and aquatic plants are usually green but can appear yellow or brown as they die down.
Once you've killed the algae, you are still left with the problem of removing it from the pool. Dead algae turns white or gray in color and falls to the bottom of the pool.
Perform water changes: The single most important way to avoid algae is to perform regular water changes. Change 10 to 15 percent of your aquarium water every week to lower nutrients in the water. This will remove the nitrate that accumulates in aquariums, which is one of the main fertilizers for plants.
The other is Suncoast Super Black Algaecide. This fast-acting, concentrated algaecide is specifically formulated to kill black algae. Finally, you'll also need a pool brush with stainless steel bristles to clean the walls and other surfaces.
Adding shock to your pool super-chlorinates your water. And this extra dose of sanitizer will kill algae growth. The more serious your pool algae problem, the more shock you'll need. We recommend using calcium hypochlorite shock, or cal-hypo shock, as an effective algae treatment.
Brush the pool surfaces (walls, floors and steps) weekly to remove algae that may be building up. Shock your pool water weekly to remove contaminants and clear up cloudy water.
In the same way that baking soda can be a spot treatment for black algae, household borax does the same for blue and green algae. Simply use the borax to scrub away algae that's sticking to your pool walls, then use the brush to dislodge it. Follow up by vacuuming up or scooping out the free-floating algae.
The Differences Between Algae and Mold
Algae are plants that grow from the sun and must have sunlight to continue growth. Mold does not need sun to grow and in addition to moisture, must have organic material to grow. Molds grow in households by eating the organic materials present in building materials.
HTH Pool Care Shock Advanced Pool Care Shock Advanced
Depending on your water chemistry, we recommend this pool shock because it can be used in chlorine, saltwater, and bromine pools, and it contributes to clear water while eliminating chloramines, bacteria, and algae.
Hardware stores and home centers sell products designed to kill moss and algae, but you can save money by using inexpensive chlorine bleach or a non-creamy hand dishwashing detergent, such as Dawn.