How many bags of shock for a green pool?

Author: Violet Pouros  |  Last update: Thursday, April 3, 2025

If the water looks good and you simply want to boost the chlorine level a bit, add 1 bag per 20,000 gallons. If the water is hazy or cloudy, use a full bag per 10,000 gallons. Or, if there is algae, use 2–6 lbs per 10,000 gallons, depending on the extent of the algae bloom.

How much shock does it take to clear a green pool?

Use a quadruple dose of shock. One pound of shock treats 10,000 gallons of water. So if you have a 20,000-gallon pool, and your water is dark green, you'll need 6 bags of shock. That's a triple dose.

Can you put too much shock in a green pool?

Adding too much shock can result in excessively high chlorine levels in the water, which can irritate swimmers' skin, eyes, and respiratory systems. 2> Damage to Pool Equipment: Excessive chlorine levels can corrode and damage pool equipment such as pumps, filters, heaters, and pool liners over time.

Will pool shock get rid of green water?

Now you add chlorine shock. Use a double dose for light green water. or a triple dose for dark green water. Then you're gonna run your filter as the shock works. Overnight. the shock will kill the algae. and the filter will help pick up the remains. Finally clean your filter.

How often should I shock my pool to get rid of algae?

Steps for Preventing Algae

If your pool is used frequently, shock it at least once a week.

How To Clear A Green Pool FAST

Do I use shock or algaecide first?

This is because when you mix chlorine and algaecide together, it renders both of them useless. Hence, you should first shock the pool and wait for the chlorine levels to fall below 5 PPM. Only then should you introduce algaecide to get the best results.

How to clear up a green pool fast?

How to Clear Green Pool Water Fast?
  1. Shock the Pool: Use a high dose of chlorine shock treatment. ...
  2. Use an Algaecide: Add an algaecide suitable for your pool type. ...
  3. Clarifying the water: Add a clarifier the next day to bind the dead algae particles and make them easier to filter out.

Why is my pool still green after shocking?

If your pool is green and cloudy, it's likely an algae problem. 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.

How do I turn my pool from green to blue?

Mission 1: Get rid of algae
  1. Step #1: Shock the water.
  2. Step #2: Remove dead algae.
  3. Step #1: Add chlorinating tablets.
  4. Step #2: Apply Algaecide.
  5. Step #1: Test your water.
  6. Step #2: Apply your balancers based on your test strip results.
  7. A Note About Hard Water & Metals:
  8. Step #1: Plan your TWICE WEEKLY pool routine.

What is the best shock for a green pool?

Cal-hypo shock is ideal for chlorine-based pool systems, especially when dealing with algae blooms or bacteria outbreaks. It's highly effective in clearing cloudy or murky water caused by heavy organic loads.

How many bags of shock should I put in my pool?

If the water looks good and you simply want to boost the chlorine level a bit, add 1 bag per 20,000 gallons. If the water is hazy or cloudy, use a full bag per 10,000 gallons. Or, if there is algae, use 2–6 lbs per 10,000 gallons, depending on the extent of the algae bloom.

Why is my pool shock not killing algae?

It's all to do with your pool's pH. Pool expert Rafi Friedman told me that 'Pool shock works best with a balanced pH. If your pool's pH is too high or too low, the shock won't be effective. Ideally, your pool's pH should be close to neutral, around 7.2-7.4, before shocking.

How long until shock clears the pool?

Depending on the size of your pool, give the shock time to circulate so it can kill any bacteria and rebalance your pool. If you've got any pool toys or brushes that you want to disinfect, now's the time to drop them in the pool. Most shocks will take about 8–12 hours to work.

How to open a pool that is green?

Follow these steps to clean a green pool and make it ready for swimming.
  1. Step 1: Physical Cleaning. ...
  2. Step 2: Test Water Chemistry. ...
  3. Step 3: Clean the Filter. ...
  4. Step 4: Shock the Pool. ...
  5. Step 5: Add Algaecide. ...
  6. Step 6: Run the Pool Filter. ...
  7. Step 7: Repeat These Steps Until the Water is Clear.

Can I shock my pool with leaves in it?

Make sure your pool is free of any waste that may hinder the pool chemicals working as they should. Remove any leaves and other loose debris with a pool skimmer.

How often should I backwash my pool with algae?

Run your filter 24 hours a day and backwash 2 times a day for the quickest results. Run the backwash cycle for 60 - 90 seconds. The more you run your pool, and the more you backwash the filter, the faster the pool will clear up.

How long does it take shock to turn a green pool blue?

Shock the pool with chlorine every day until all the green is gone (possibly 3 to 4 days). 2. Run the filter 24 hours a day and backwash every day until the green and then cloudiness is gone (usually up to 7 days, sometimes as long as 2 weeks depending on the filter).

Will baking soda clear a green pool?

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.

Should you brush the pool before or after shocking?

Brush the pool after adding shock to help eliminate the risk of bleaching your pool while simultaneously loosening up whatever algae is on your pool's finish (if your pool walls or floor are slippery, that is algae).

How to fix a green pool fast?

Follow these steps to treat and prevent green pool water.
  1. Test and Balance Water. Always begin by testing your pool water. ...
  2. Clean Pool Water and Surfaces. Skim water surface to remove visible debris, brush walls, vacuum and empty skimmer baskets. ...
  3. Apply a Shock Treatment. ...
  4. Apply an Algaecide. ...
  5. Clean Filter.

What happens if you add too much shock to your pool?

Is it possible to shock your pool too much? Yes—excessive shocking of your pool will keep it at an elevated chlorine level. This will cause irritation of the skin and eyes as well as excessive wear and tear on your pool filter system, including excessive corrosion of all metal parts.

How much shock to get rid of algae?

So How Much Shock Treatment for Yellow Algae? Recommended Treatment: 3LB of Calcium Hypochlorite for every 10,000 gallons of pool water.

Why did my pool turn green after I shocked it?

Pools can immediately turn green after being shocked when they have metals like copper in the water. These metals oxidise when exposed to high levels of chlorine, which makes the pool water turn green. Adding a metal control product such as Zodiac Metal Remover will help to restore the pool water.

How to get a green pool blue again?

Steps to Turning a Green Pool Blue
  1. Step One – Correct the pH of your water. Your swimming pool water should be between 7.2 and 7.6 if you are planning to shock treat it. ...
  2. Step Two – Shock dose of chlorine. ...
  3. Step Three – Loosen and remove algae. ...
  4. Step Four – Check your filters and run your pump.

How often should I shock my pool?

Shocking your pool regularly will help to keep the water clean and free of contaminants. You should aim to shock your pool about once a week, with the additional shock after heavy use. Some tell-tale signs that your pool needs to be shocked are cloudy, foamy, green, or odourous water.

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