Why is my free chlorine zero?
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.
How do I raise the free chlorine in my pool?
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.
Can you swim in a pool with no free chlorine?
Statistically, a pool without chlorine is more likely to make you sick because of the possibility of being exposed to the things not contained or killed by chlorine. To be fair, you could swim in a pool without chlorine and probably be just fine, but the health and safety risks would be much greater.
How do you fix low free chlorine in a pool?
If your total chlorine level is high, you will use a non-chlorine shock; if it is low, you will use a chlorinated shock. As a rule, you will need to raise free chlorine to 10 times your combined chlorine to hit what is known as “break point.” Therefore, it is good to deal with combined chlorine while it is still small.
Why won’t my pool hold any chlorine?
If you test your pool water and can’t get a chlorine reading, it may be due to your pool’s high demand for chlorine. A high chlorine demand (sometimes referred as chlorine lock), simply means that although your water may appear clear and balanced, the chlorine in your pool is ineffective.
What if my free chlorine is low?
When your free chlorine levels get too low, we recommend using calcium hypochlorite to raise them back up. PRO TIP: We recommend testing free chlorine every day and adding chemicals as you need to keep your free chlorine in recommended ranges. We also recommend adding your chemicals at night.
What happens if free chlorine is low?
How much shock Do I need to raise free chlorine?
When you’re shocking a pool, the goal is to raise the free chlorine level of the pool water to roughly 10 times the combined chlorine level.
Will Shock raise free chlorine?
Free chlorine is just that, free. Free to interact with other chemicals, algae, bacteria or the like. Shocking then releases the combined chlorine and off-gasses the contaminants, increasing the amount of free chlorine in your pool or spa.
What do I add if free chlorine is low?
What should the free chlorine reading be in a pool?
However, if your free chlorine reading is different than your total chlorine reading, then there’s a problem. You shouldn’t have a free chlorine reading of 3 and a total chlorine reading of 7.
How can you tell if your pool has a lot of chlorine?
The quickest way to determine if your pool is experiencing a high demand for chlorine is to perform a test for free and total chlorine. Free chlorine shows the level of disinfecting chlorine available to sanitize your pool. Free chlorine isn’t interacting with contaminants, yet. Total chlorine is the amount of chlorine, used or not, in your water.
Why does my pool have low free chlorine?
There are many occurrences that cause chlorine in a pool to be used up at a higher rate. Things that cause low free chlorine levels are excessive sunlight, high bather loads, and improper water chemistry.
When to add chlorine to your swimming pool?
Bring your chlorine levels to 20ppm or three times higher than the current levels. We recommend using a non-chlorine oxidizing shock until your free and total chlorine reads the same. We typically see more pools with a high demand for chlorine during spring opening season.