Chlorine bleach in the 3 to 6 percent solution you use in your laundry room will kill algae. Bleach also contains surfactants, so it can penetrate algae. Bleach can burn your skin if you touch it; it also burns and kills algae.
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.
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.
Vinegar is acceptable to use for killing algae and cleaning a pond when it is drained. The acidic is good at lifting away the stubborn algae deposits and stains without damaging the liner material. When used in this way in limited amounts, the leftover vinegar residue won't hurt the fish or change the pH of the water.
When added to water containing algae, H2O2 breaks down into water and oxygen, releasing free oxygen radicals in the process. These free oxygen radicals can then react with and destroy the cell walls and membranes of algae cells, causing them to die off.
Hydrogen peroxide is especially effective against green algae and blue-green algae (cyanobacteria). It is heavier than water and sinks to the ground, which is useful if you're dealing with algae near the ground and somewhat of a hindrance if the algae are higher up in the tank.
Only algaecides can "kill" algae in pool water. However, baking soda can help clear up algae. Use both so you can restore sparkly, clean water!
You can use a bleach and water solution made with Clorox® Disinfecting Bleach for cleaning algae and mold from exterior sealed non-porous surfaces like stucco and painted wood, siding, tile, brick and patio stone. In some cases, bleach and water are all that's needed to clean away mold and algae.
Using baking soda in your pool is one of the easiest but most efficient ways to get your backyard ready for summer. This pool idea is loved by experts who recommend using this homemade remedy to increase the alkalinity and pH level of your pool – and treat black algal growth on your swimming pool wall.
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.
Put a few drops of dish soap into a bucket of warm water. Swirl your fingers around till the water lathers. Dip a brush into the water, then scrub algae-covered spots on your furniture. It will help remove most algae, especially in the early infestation stage.
Algae Clean is a super concentrated quaternary ammonia solution formulated to kill and remove algae, mildew, and bacteria. It is a non chlorine liquid solution and is non corrosive, odor free and safe to use on all surfaces. Effective removal of mould from paths, painted surfaces, masonry, tiles and roofing tiles.
Apply a mustard algaecide following the label directions. Allow the water to circulate for 24 hours. Use a pool vacuum or backwash the pool again to remove the remaining dead algae. In persistent cases, brush the pool and apply algaecide once more after two to four days.
Prevent harmful algal and cyanobacterial blooms from forming
Use only the recommended amount of fertilizers on your farm, yard, and garden. This will reduce the amount of nutrients running off into nearby water bodies. Nutrients in the water can help algae and cyanobacteria to grow more quickly than usual.
Pool professionals tend to recommend more conservative amounts of bleach. I've seen recommendations ranging from one quarter of a gallon per 10,000 gallons of pool water, which supposedly raises chlorine levels to 2.5 ppm, to one gallon per 30,000 gallons of pool water, for about 2 ppm of chlorine.
Sodium Percarbonate is an excellent killer of bacteria, fungi, various viruses and mold, so it can be used as a very effective agent for removing algae and moss.
In the case of blue-green algae: Use 1.5 to a maximum of 2.5 ml of the 3% solution of hydrogen peroxide per gallon of water. In the case of green algae: 20.25 ml to a maximum of 32.5 ml of the 3% solution of hydrogen peroxide per 13 gallons of water.
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.
TIP 5: USE BLEACH OR VINEGAR
Oxidized bleach immediately starts to kill algae cells once it comes into contact with it. Bleach, however, should not be your first option, especially if the area you plan to rid of algae is near plants or grass.
"Hydrogen peroxide is actually detrimental to wound healing," says Dr. Yaakovian. "It prevents healing rather than promoting it." That's because its reactive power isn't specific to germs.