If vinegar does not do the trick, you can also try mixing about a cup of bleach for each gallon of water and using this as your mold-killing spray solution.
There are a few ways you can remove algae from your green pavers, walls and fencing, some more effective than others. The simplest and most effective way is with HG algae and mould remover.
Cleaning brick pavers
Cleaning pavers with vinegar is a great way to get rid of stubborn moss, algae and stains on brick. Here's what you need to do: Always use white vinegar, as dark vinegar can stain.
Steam cleaning can kill algae and remove it from concrete. Load water into your steam cleaner. Allow the machine to warm up, and then blast the algae with spurts of hot steam. Once the surface has been thoroughly steamed, scrub the area with a brush and finally rinse the area with clean water.
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.
Bleach is great for killing algae (and other organisms that may lurk in your tanks) and for keeping it from coming back.
Barley straw is a natural way to fight algae. On contact with water, the straw starts to break down, and as it does so it releases peroxides into the water which combat algae. Available in mini bales, or as a concentrated extract of barley straw liquid, it's a natural way of chemically fighting algae.
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.
Whilst vinegar will not directly dissolve concrete itself, but it will degrade the cement that binds your concrete slabs or flags together. Extended exposure to vinegar will also cause any polish or sealant on your pavers to erode over time, leading to bleaching, stains and weathering.
If you have an algae problem, your best friend is white vinegar. White vinegar can quickly kill algae but is not harmful to birds, insects and the majority of plants. Use a mixture of one part water to one part white vinegar to spray down the area and kill the algae.
Mix two gallons of water, two cups of oxygen bleach, and one cup of borax. Stir the recipe until everything dissolves. Add ¼ cup of dish soap and stir. Apply the cleaning solution and scrub with a brush.
Diluted Bleach 10:1
A solution of household bleach diluted 10:1 with water (10 parts water) can be used to remove many types of stains. Some of these include beverage stains, leaf, wood rot, and tobacco stains. Always test a small section of your patio before covering a large area.
Make up a 50:50 vinegar and water solution, and apply to the paving – using a watering can will help you get even coverage. Leave the solution to soak for around 20 minutes, then use a stiff brush to remove stains. Once you're done, mop with clean water. Leave to dry before you put anything back on to the patio.
Stay Clean is a protective treatment that inhibits moss, mold and algae growth on outdoor concrete and brick structures such as concrete patios, walkways, pavers and other. Stay Clean contains an acrylic bonded mold, moss, & algae inhibitor that will adhere to most porous surfaces.
Chlorine is the only chemical that acually kills algae. It acts in the same way as setting fire to the algae, it oxidises it.
Aquatic herbicides used to treat algae are called algaecides. They're often copper-based compounds (e.g. copper sulfate, copper chelate communes, chemical Endothall). Effective if the entire surface is treated. Algaecides are expensive and need frequent dosing.
Sodium Bromide. This chemical can be used during the shock treatment of your pool. It is ideal for killing mustard or black algae. However, you can only use sodium bromide solution on cleaning systems compatible with bromine and chlorine compounds.
This article has been viewed 1,551,648 times. To eliminate and prevent green algae in a swimming pool, start by adding an extra dose of chlorine to your pool to shock the algae and stop the bloom. Let the chlorine work overnight, then test the pH levels of the pool in the morning to see if the pH is back to normal.
Zooplankton, tadpoles, and crustaceans eat algae. Many aquatic consumers such as zooplankton, tadpoles, algae eater (algivore), small fish, crustaceans, and water-dwelling insects eat algae as their primary food source.
Note: Rock salt @ 1 pound per 100 gallons can kill stringy algae and aquatic plants. Remove excess algae or aquatic plants before dosing with this level of salt. The decaying vegetation will pollute the pond and reduce oxygen levels. Be careful when adding salt to your pond.
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!
A rule of thumb is 1.5 lbs. of baking soda per 10,000 gallons of water will raise alkalinity by about 10 ppm. If your pool's pH tested below 7.2, add 3-4 pounds of baking soda. If you're new to adding pool chemicals, start by adding only one-half or three-fourths of the recommended amount.