Quick Answer: What Should The Free Chlorine Be In A Pool?

What is more important free chlorine or total chlorine?

If the total chlorine level is higher than the free chlorine level, the difference of the two is the combined chlorine level.

In order for your pool to be properly sanitized, the free chlorine level must remain higher than the combined chlorine level.

This is why it’s so important to test your pool water regularly..

How do I raise free chlorine in my pool?

Raise the Level of Pool Chlorine Raising pool chlorine can be much easier than trying to lower chlorine levels. Simply adding chlorine in the form of chlorine tablets, granular chlorine, liquid shock or powder shock will increase the total amount of chlorine within the pool.

What is the difference between chlorine and free chlorine in a pool?

Total chlorine is the total amount of chlorine in the water. When chlorine binds up with contaminants it forms a compound called “chloramines” that are still part of the total but no longer effective. The chlorine that is still active to remove contaminants is known as free.

What happens if free chlorine is low?

When the chlorine level is too low, microorganisms like bacteria are able to multiply faster. With harmful bacteria like e-coli, this will quickly cause your pool to be unhealthy, risking any swimmers potentially getting sick. Algae growth. Algae will also grow quickly.

Does shock raise free chlorine?

Free chlorine is just that, free. … Shocking then releases the combined chlorine and off-gasses the contaminants, increasing the amount of free chlorine in your pool or spa. The question of whether to use a chlorinated or non-chlorinated shock will depend on how much total chlorine you have in your pool or spa.

Why do I have no free chlorine?

One of the causes of a high chlorine demand is an excessive buildup of algae and phosphates. Although you’re adding chlorine to your water, bacteria or algae are overpowering the chemicals causing it not to show up on tests strips or in water kits. … As chlorine does its job, it is depleted in the process.

What should the free chlorine level be in my pool?

In general, the free chlorine level should remain between 1.5 and 2.5 parts per million. Combined chlorine levels should not be above 0.5 parts per million, and swimmers are likely to be more comfortable if the level is below 0.2 parts per million.

What does free chlorine mean?

Free chlorine refers to the amount of chlorine that has yet to combine with chlorinated water to effectively sanitize contaminants, which means that this chlorine is free to get rid of harmful microorganisms in the water of your swimming pool.

Is shock the same as chlorine?

Shock is chlorine, in a high dose, meant to shock your pool and raise the chlorine level quickly. … Chlorine tabs (placed in a chlorinator, floater, or skimmer basket) maintain a chlorine residual in the water. You do need to use both tabs and shock.

Can total chlorine be less than free chlorine?

If the Total Chlorine in your pool is higher than the Free Chlorine reading, then the difference between the two represents the level of Combined Chlorine in the water. If the readings are the same, then no Combined Chlorine is present. The Total Chlorine level cannot be less than the Free Chlorine level.

How long do you have to wait to swim after you shock a pool?

After Shocking Your Pool It is safe to swim once your chlorine levels are around 5 ppm or after 24 hours.

Why is my free chlorine so high?

Reasons it could be high: Your pool has been over dosed with too much liquid or powder chlorine. Your Chlorinator is turned up too high. Your TOTAL chlorine level is high (and your FREE chlorine is low) but ineffective due to a “chlorine lock”, which happens when too much Cyanuric Acid is added to the pool.

Why is my total chlorine high but free chlorine low?

This occurs when too much stabilizer is added to the water or when the swimming pool isn’t being partially drained and refilled periodically. Chlorine lock can also occur if the pH is unbalanced. The quickest way to determine if a chlorine lock is present is to perform a test for total chlorine and free chlorine.

Why can’t I get a free chlorine reading in my pool?

If you test your pool water and can’t get a chlorine level reading at all it may be due to a very high chlorine demand. … Contamination, low pH or low chlorine stabiliser levels could cause this situation. The water might appear cloudy, the pool walls be slimy or the pool may look relatively OK.

Is it safe to swim in a pool with low free chlorine?

Anything between 5-10 ppm is still safe to swim, but you are risking damage to equipment and certainly complaints from swimmers. Some experts recommend no swimming unless the chlorine is 8 ppm or less. You need to make sure your water is first balanced before expecting an effective sanitizing program using chlorine.

Can I add shock and chlorine at the same time?

Yes, you can add both shock and chlorine to a pool. However, you should not add them at the same time. The best thing to do is to shock your pool first. Then, once the chlorine levels go down to a certain threshold, you can add more chlorine.

How often should pool be shocked?

It’s often recommended to shock your pool once a week. If you don’t do it every week, you should at least do it every other week. This is necessary to maintain your pool’s water chemistry. If you have a lot of people over in your pool or have a party, you may want to shock your pool more frequently.