Asked by: Latasha Unterbuchner
pets fish and aquariums

Why is algae growing in my saltwater pool?

Last Updated: 2nd April, 2020

When your salt pool goes green, your pool develops a very high "chlorine demand". If your 20,000 gallon pool turns green and has algae growing on the walls, it will probably require twice that amount (10 lbs) to burn up the algae in the water and on the walls.

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Then, what causes green algae in saltwater pool?

The green colour is algae, which contains the green pigment chlorphyll. The more algae in the water the greener your pool. Algae growth is normally prevented by a sanitiser, most commonly chlorine. For the most part, salt water chlorinators and bleach pump pools both add chlorine to the water at a constant rate.

Secondly, what kills algae in a pool? Use chlorine as your go-to algae killer. When your pool water is green or contains visible algae clumps, your pool does not have enough chlorine. "Shocking" the pool with a large dose of chlorine is the most effective way to kill the existing algae and bring your pool back to sanitary conditions.

Keeping this in view, does salt water kill algae?

Using Rock Salt of rock per 1,000 gallons of water to kill the string-like algae. Use caution when using salt as it can kill plants and fish in the pond. Plants exposed to the salt will decay and can contribute to the debris that algae love so much.

Do I need to shock my saltwater pool?

It's absolutely okay to shock your salt water pool, and is actually pretty important! Running your pool's super-chlorinate feature too often is hard on the motor and will cause it to wear out faster. The super-chlorinate feature will not always kill all the algae or clean up the pool water as effectively as pool shock.

Related Question Answers



Do I need algaecide in my saltwater pool?

Chlorine alone doesn't kill algae in salt water pools, so you must add appropriate amounts of algaecide to your water to keep it algae-free. Select an algaecide that contains at least 30 percent active ingredient, such as metal or ammonia.

Onesiforo Romer


Can you put chlorine tablets in a saltwater pool?

With a salt water chlorine generator, you eliminate buying chlorine tablets or pool shock, the salt system can be used to shock your pool. Salt systems keep the water crystal clear and algae free and also makes your water chemistry easier to maintain because there is not as much fluctuation with pH or Alkalinity.

Lavone Makunin


What happens if you put chlorine in a saltwater pool?

yes you can. It does not matter to the pool water how the chlorine is introduced - just that it is introduced. So in this sense you can add liquid chlorine, granular chlorine or even chlorine pucks to your pool if you have a salt system and this is no problem at all.

Anatoly Youk


Why does my saltwater pool have green algae?

The green colour is algae, which contains the green pigment chlorphyll. The more algae in the water the greener your pool. Algae growth is normally prevented by a sanitiser, most commonly chlorine. For the most part, salt water chlorinators and bleach pump pools both add chlorine to the water at a constant rate.

Inaxio Daniels


Why is there no chlorine in my saltwater pool?

Salinity. Chlorine generators need salt to produce chlorine and can't do so if the amount of salt in the water is too low. Get a salt-testing kit from a pool supplier and check to make sure that the levels are within this range. If your salinity is below 2,500 ppm, the generator will not be able to produce chlorine.

Qin Mendijurre


Does salt kill algae in a pool?

Shock Your Salt Water Pool
Ensure the levels of your pH and alkalinity of your pool are correct. There are cases that algae will cling to the surfaces of your pool, but by scrubbing the bottom and the sides, if you break it up first, then the chlorine shock will have a better chance to kill it.

Cel Urrejola


Does algae grow in saltwater pools?

A saltwater pool is a chlorine pool. All the SWG does is generate the FC for you everyday from the salt instead of you having to add it. If the FC gets too low, algae can start to grow. Also realize that the SWG tend to make the pH rise faster, so more acid may be required.

Yufen Sargaço


How do I get my pool from green to clear?

The pool will be green when you have live algae in the pool and when you kill the algae, the dead algae will turn the pool from green to cloudy or milky and then to crystal clear. Continue to maintain your pool at shock level until your pool is crystal clear.

Aristobulo Dais


How do I clear my green above ground pool?

Make sure the pH is normal or a little low.
  1. Add liquid chlorine. Don't buy your chorine at Walmart or Home Depot.
  2. Run the pool pump for 12 hours a day. Running the pump/filter for 12 hours will allow the dead algae to settle on the bottom of the pool so you can then complete step five more effectively.

Ikbal Aranguren


How do I clear up my saltwater pool?

Using A Pool Clarifier
  1. Step #1: Check water chemistry in your pool.
  2. Step #2: Prepare a bottle of swimming pool clarifier.
  3. Step #3: Add water clarifier to your pool and observe.
  4. Step #4: Run your pool pump.
  5. Step #5: Remove any excess particles.
  6. Step #1: Prepare your flocculant.
  7. Step #2: Add the flocculent to your pool.

Jenna Harguindey


Can you shock your pool during the day?

Shock your pool late in the evening or at night, when the sun is down to make sure free chlorine will stay longer in your water. Ultraviolet (UV) rays from direct sunlight greatly reduces free chlorine levels, so shocking during the day will not be very effective.

Golden Giraldes


Can you swim in a green pool?

Lack of Chlorine.
Without chlorine, your pool water will quickly start to grow algae and turn to a green pool water. It should be noted that water with an algae bloom can be a breeding ground for mosquitoes and other insects, but more importantly, it is unsafe to swim in.

Wail Martiens


Can you use sea water in a swimming pool?

The proposal to use sea water to top up domestic swimming pools as a water conservation aid has met a dubious response from representatives of the pool industry. They point out that sea water is significantly more salty than even salt-water swimming pools and that it could corrode such equipment as pumps.

Barbra Rachdi


Can I put baking soda in my pond?

We recommend adding 1 cup of baking soda per 1,000 gallons of pond water daily until your KH level has increased to 150 PPM. Test your KH level after 24 hours before adding more Baking Soda.

Lawrence Seldis


Can you just add salt to your pool?

The granulated salt used in a saltwater pool can be as simple as regular table salt, but not the iodized version. A pool that has no salts present in the water needs about 50 pounds of salt added per 2,000 gallons of pool water. The best practice is to test the water before and after adding salt using salt test strips.

Tasleem Vieto


Does vinegar kill algae in ponds?

A solution of diluted bleach with one part bleach to nine parts water can help kill and prevent algae. Another option is to use a mix of white vinegar and water. Vinegar is safe and is effective on algae. Rinse the fountain thoroughly after cleaning it.

Tanesha Gasparov


How long after adding salt to pool Can you swim?

It is recommended to wait at least 20 minutes to an hour after adding water balancing chemicals. You should wait 2-4 hours (or one full cycle through the filter) to swim from the moment you use calcium chloride in your pool. It is safe to swim once your chlorine levels are around 5 ppm or after 24 hours.

Elka Roerich


Can you put bleach in a saltwater pool?

Just like any other chlorine pool, shocking a saltwater pool is no different. Balance the Chemistry: Before you add shock to the pool, it's important to test and adjust (if needed), your pH, Alkalinity and Calcium Hardness levels. If using 6% liquid chlorine bleach, add 5 gallons per 10000 gallons.

Juris Viñuela


Is algae dangerous in a pool?

Generally, algae is not dangerous to humans. However, when swimming pool water is not taken care of for long periods of time, algae can grow and multiply and become a comfortable home for harmful microbes. It is the bacteria among these microbes that can have a negative health effect on swimmers if exposed to it.