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.
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.
Black Algae
Grab a brush and some baking soda. Bicarbonate, the active ingredient in baking soda, is an effective spot treatment to help kill the algae and loosen it from the wall. Make sure you really get every last particle free; black algae has particularly long and stubborn roots which makes it a persistent strand.
As a rule, you don't add more than 2.5 pounds of baking soda in a day. Instead, start off adding the required amount (e.g., 1.25 for 10,000 gallons of water) of baking soda that can raise the alkalinity of your pool to 10ppm. You can sprinkle your baking soda over the surface of the pool, or you pour into a skimmer.
Does baking soda kill algae in pools? 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!
Allow the baking soda to circulate in the pool for at least 6 hours. Be sure to turn on the pool's pump to help it circulate more thoroughly. Test the pH and alkalinity levels again. Repeat the steps above if levels are still too low.
Ideally, you'll add baking soda to your pool on a day when there's little wind. That way, your measurements don't get thrown off if some of the baking soda doesn't make it into the pool because of a strong breeze.
Use a pool brush to vigorously scrub any pool surfaces covered in algae, including the walls, floors and steps. Apply a green algaecide according to the directions on the label. Let the water circulate for 24 hours, then brush the pool surfaces again. Vacuum or backwash to remove any remaining dead algae.
You should not add all pool chemicals at the same time. You should also avoid mixing pool chemicals together. Adding chemicals at one time can cause dangerous chemical reactions and serious injuries. In addition, it will make it difficult to balance the pool.
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.
Shock Your Pool
Shocking is the process of adding chemicals to your pool to raise chlorine levels and kill bacteria and algae. We recommend using a calcium hypochlorite shock to treat your algae problems.
Whenever pH drops below 7.2, add 3- 4 lbs. of ARM & HAMMER™ Baking Soda per 10,000 gallons of water to raise the pH. If after a day or so, the pH has not stabilized and drops below 7.2 again, add another 4 lbs. of ARM & HAMMER™ Baking Soda per 10,000 gallons of water.
Scrub the black algae away with a good, stiff pool brush. This will help break down the protective layer and make it easier to treat. Break a chlorine tablet in half and rub it directly onto the affected areas. The chlorine treatment will kill the algae's roots and prevent it from coming back.
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.
There are a lot of reasons why algae keep returning to pools. The most common of these reasons are: Low levels of chlorine or chlorine getting burned up too fast before it gets the opportunity to kill the algae. Improper filtration and lack of water circulation can also lead to algae coming back to your pool.
Baking soda will also improve the stability and clarity of cloudy pool water. You'll want to add baking soda to your pool if the water has too much chlorine. Pool water of this nature can cause swimmers to have itchy skin and stinging eyes. In addition, it can corrode pool ladders, liners, and other components.
Add some water to the pool to dilute the baking soda. This will also dilute your other chemicals. Use muriatic acid to lower total alkalinity fast. This will also lower pH.
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.
Can baking soda replace chlorine in a swimming pool? Nope. Baking soda is a very similar composition to what is known as soda ash. Soda ash is used to raise pH in a swimming pool.
Clear pool water with a green tint may be from pollen, chlorine-resistant algae, or most often from a too-high pH level. When a pool's pH is over 7.8, even high levels of chlorine destabilize and cannot sanitize, and metal in your water and pool components can oxidize, giving off a greenish hue.
She says: 'Contrary to popular belief, baking soda does not directly decrease the chlorine levels of a swimming pool, but aids in the neutralization process of chlorine. One of the high alkaline chemicals is baking soda and adding this to your swimming pool will increase the water's pH and alkalinity.