There are hundreds of claims of homemade mixtures for killing algae, but baking soda is not one of the effective treatments you should try. Since baking soda is highly alkaline and reacts when mixed with an acid, many people assume it can be used to change the pH of a pond to discourage algae growth.
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!
What Kills Algae Naturally? Certain plants and bacteria act as natural algaecides, helping to control algae populations. These include barley straw, which releases compounds that inhibit algae growth when it decomposes, and beneficial bacteria, which consume algae. When using natural algaecides, patience is key.
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.
- For Stubborn Algae: Mix equal parts of white vinegar and water or a diluted bleach solution (1 part bleach to 10 parts water). Make sure to test a small, hidden area first to avoid any damage. Apply the Solution: Use a sponge or brush to apply the cleaning solution to the affected areas.
Determine how severe the algae or other biological growth is. For heavy soiling, dilute 2 parts water to 1 part GK Greener Kleener. For light to medium soiling dilute 3 parts water to 1 part GK Greener Kleener. Easily apply the formula to the affected area using a garden sprayer or a brush.
Shock the pool weekly. Shocking helps reduce cloudy water, which could be an indicator of early stage algae growth. Pools are generally shocked with concentrated forms of chlorine like calcium hypochlorite or dichloride. Calcium hypochlorite is a granular chlorine oxidizer that adds chlorine and calcium to water.
If you put too much baking soda in your pool, your alkalinity will rise. That means you'll need to take steps to lower your alkalinity.
As pool experts, we hear this question a lot. The short answer is no; baking soda will not clear a green pool, as it cannot kill algae. Adding baking soda to your pool will, however, raise your alkalinity and pH levels and can be helpful when dealing with small growths of black algae.
Healthy plants are algae resistant, unhealthy plants attract algae. Healthy plants that receive sufficient nutrients, light and carbon in a favourable environment produce antimicrobial chemicals that prevent pathogens and algae from attacking the plant.
Baking Soda: Baking soda can help maintain the correct pH levels in your pool water, discouraging algae growth. It's a natural and safe method, but remember, too much can be as harmful as too little, so be sure to get the balance right. Saltwater Pools: Saltwater pools can be an effective way to prevent algae growth.
Wait for the soda to dissolve
'After 6 hours, retest the pool water again, and if the pH and alkalinity levels are still below the recommended range, then repeat the steps,' Alicia adds.
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 can persist in a pool even after shocking. A green pool – especially one that turned green overnight or after rain, can also be from a pool pump that isn't properly circulating water or an issue with your filtering system.
Baking soda dramatically boosts oil production in algae. Summary: Researchers have discovered that baking soda can dramatically increase algae's production of the key oil precursors for biodiesel.
You should only add one chemical at a time. Running your filter for at least 4 hours in between. Only add baking soda if your Ph is low.
Nannini's test suggests that the Magic Eraser works to an extent, but is not a cure-all. “I'd say it's just collecting the algae, but it's definitely not correcting any water balance,” she said.
Baking soda can help raise the pH level of your pool water, but it's not typically used to clear a green pool. A green pool usually indicates an algae problem, which requires proper treatment with algaecides and possibly shock treatments to kill the algae.
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.
Check the alkalinity using your test kit. Let the pool run for a full pump cycle, which takes about 10 hours, before swimming. If your alkalinity levels are still off after the first baking soda treatment, add more baking soda to reach the desired ppm.
There's a protocol when using Clorox® Disinfecting Bleach for swimming pool disinfection to prevent algae growth when a pool is in use: on an ongoing basis, if you super-chlorinate the pool with 6-12 cups bleach per 5,000 gallons of water, in addition to regular chlorination, algae growth can be prevented.
Step 4: Filter and Circulate
Run your pool filter continuously for at least 24 hours. This will help circulate the chemicals and remove dead algae from the water. You may need to clean or backwash your filter during this process.
Step #1: Shock the water
The shock treatment you use will raise the chlorine level in your pool enough to kill the algae. If the first round of shock doesn't kill all the algae, you may have to apply another round of shock the next evening. Make sure you've killed all algae before moving on to the next step.