
When your cyanuric levels are too high, you have three options:
- Purchase a cyanuric acid reducer
- Wait for heavy rain
- Drain and refill with new pool water (Read: How to drain an above ground pool ).
What to do if you have too much cyanuric acid in your pool?
If you have removed too much cyanuric acid in your pool, we advise you to add a little amount of cyanuric acid as a pool stabilizer or pool conditioner to raise the cyanuric acid (CYA) level. What is cyanuric acid in your pool? To better understand the effect of this chemical, also known as pool conditioner, we will go from afar.
How do you remove CYA from swimming pool water?
Consult a pool professional if you want to drain more than 1/3 of your water, because there are risks with hydrostatic pressure and other concerns. There are also some specialized filters that exist to capture CYA and remove it from water, such as reverse osmosis (RO).
Should I drain high CYA water from my Pool?
Perhaps there are valid reasons—costs, structural risks, labor, environmental concerns—for not draining high CYA pool water. That being said, draining and/or diluting water is still the most economical way to lower CYA levels in a pool. What is CYA, and why keep it to a minimum?
Can I chemically reduce CYA levels in my Pool?
However it is very easy to reach levels of CYA that act counter productively. There unfortunately is not many options for chemically reducing CYA levels in your pool. So depending on the size and location of your pool, the most common and practical way is dilution. Having said that, we’ll go over both of those options in this article.

How do I lower cyanuric acid without draining my pool?
This contains cyanuric acid and continuing to add it to your water will make the problem worse.Dilute Pool Water by Partially Draining and Refilling. Diluting your water is the easiest and most effective way to lower cyanuric acid in your pool. ... Try a Chemical Cyanuric Acid Reducer. ... Use a Reverse Osmosis Filter.
What kills cyanuric acid in pool?
The only effective way to lower your CYA is to partially drain your pool and refill it with fresh water. If you think your cyanuric acid is too high, the first step is to stop adding more CYA or stabilized chlorine to your pool before diluting your water.
What is the fastest way to dissolve cyanuric acid?
The fastest, most effective way is to use liquid stabilizer. Pour it directly into the pool while it's running. It will raise the cyanuric acid levels almost immediately, rather than over the course of a few days.
What causes high levels of cyanuric acid in pools?
The main reason for high CYA levels in your pool is from using too much stabilized chlorine. When the pool water evaporates, CYA remains in the water, much like other chemicals such as salt and calcium. As an example, 1 lb. of trichlor in a 10,000 gallon pool will raise the CYA level by 6 ppm.
Will CYA go down over time?
– Unlike chlorine, CYA is never used up and accumulates in the pool water as a waste product. Once you have added it to the pool water, it will remain in the water. The best way to reduce CYA is to partially drain the pool and add fresh water.
Does baking soda lower CYA?
Does baking soda raise cyanuric acid? No baking soda doesn't increase your CYA level. It does, however, raise your pool's total alkalinity. It won't protect or stabilize your chlorine levels.
How long does it take for CYA to dissolve in pool?
4 to 7 daysRegular cyanuric acid with a pH of 2.8 is very acidic and it takes from 4 to 7 days to dissolve. This can cause damage to the pool surface or circulation system, depending on the method of application.
Is it safe to swim in a pool with high cyanuric acid?
Whilst swimming with high cyanuric acid levels doesn't pose any risk from the CYA itself, the sanitizer in your pool will be less effective and could put you at risk of picking up a bug due to unsanitary water. If your cyanuric acid levels are high, you'll need much higher levels of chlorine for it to be effective.
Does sunlight lower CYA?
Cyanuric Acid Facts The Sun's ultraviolet rays degrade chlorine very quickly, creating a problem for outdoor pools. Studies show that sunlight can wipe out chlorine by 75-90% in a matter of two hours. The half-life of chlorine—when exposed to direct sunlight—is about 45 minutes.
Does shock raise cyanuric acid?
Shock does not contain any cyanuric acid, so after 24 hours, the elevated amounts of chlorine are no longer in the pool. as 90 percent of the chlorine in the water in two hours.
Does chlorine increase cyanuric acid?
Some pool owners that utilize powered, tablet, or stick forms of stabilized chlorine will be adding cyanuric acid unknowingly, as most of the chlorine sold today contains cyanuric acid. Continual use of these products without regular water exchange will increase the cyanuric acid to a high level.
How long does cyanuric acid last?
Water TechniX Clarifier Polish 1L - Pool Chemical Cyanuric acid can last almost indefinitely as long as it's stored properly.
Does shock lower cyanuric acid?
1:113:22How to Lower CYANURIC ACID in a POOL | Swim University - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo if you're trying to bring down your cyanuric acid levels the first step is to stop addingMoreSo if you're trying to bring down your cyanuric acid levels the first step is to stop adding stabilized chlorine.
Does sun burn off cyanuric acid in pool?
A chlorinated pool with cyanuric acid will remain chlorinated in direct sunlight; whereas, without a stabilizer, chlorine will dissipate and leave the pool unprotected without free chlorine in a matter of hours. Most importantly, cyanuric acid will not be consumed and will, over time, build up in pool water.
Will rain water lower cyanuric acid?
Cyanuric Acid, which is like sunscreen for your chlorine, will likely diminish during a heavy rainstorm.
Does the sun lower cyanuric acid in pools?
Cyanuric Acid Facts Cyanuric acid (CYA) is well known in the pool business. It serves as a protection shield for chlorine against sunlight. The Sun's ultraviolet rays degrade chlorine very quickly, creating a problem for outdoor pools. Studies show that sunlight can wipe out chlorine by 75-90% in a matter of two hours.
Why is chlorine lock bad?
Referred to as chlorine lock, this happens because high CYA overpowers the free chlorine level in the pool. With compromised chlorine you’ll soon start seeing issues like algae and cloudy water.
How to lower cyanuric acid in pool?
Method #2: Use A Cyanuric Acid Reducer. A product such as Bio-Active or Natural Chemistry is a CYA reducer that will help lower cyanuric acid in your pool. In cases where the CYA level is extremely high, you can use CYA reducer to bring it down, and then use the dilution method to top it off.
Why is my pool CYA high?
The main reason for high CYA levels in your pool is from using too much stabilized chlorine. When the pool water evaporates, CYA remains in the water, much like other chemicals such as salt and calcium. As an example, 1 lb. of trichlor in a 10,000 gallon pool will raise the CYA level by 6 ppm. With the ideal range for pool CYA being 30 ppm ...
What is the ideal cyanuric acid level for a pool?
The ideal range for cyanuric acid in your pool is between 30 and 50 ppm (parts per million). Anything significantly higher and you should be keeping a close eye on your water chemistry, as it may be compromised. Let’s talk about why this happens, why it matters, and how to lower cyanuric acid (CYA) in your swimming pool.
What is the name of the acid in pool water?
Cyanuric acid is a weak acid that reduces chlorine loss in your pool water by shielding it from the sun’s UV rays, effectively “stabilizing” your chlorine. It also goes by the name CYA, pool stabilizer, or pool conditioner.
What happens if you have too much CYA?
When too much CYA is present, you’ll see a decrease in the ORP of the water as it becomes less effective. Health issues. High CYA can impact your health, as a dangerous organism known as cryptosporidium parvum won’t be properly removed from the water.
How to empty water from a pool with a submersible pump?
If using a submersible pump, place it in the pool and attach a hose to it that is long enough to reach the drainage point/sewer you are emptying the water to. Make sure the electrical cord is long enough to reach the power outlet as well.
Why does your pool need cyanuric acid?
Because cyanuric acid stabilizes the chlorine molecules and keeps it from breaking down in the sunlight, it’s essential for anyone with an outdoor pool.
What levels of cyanuric acid are optimal?
Even a small amount of cyanuric acid is good for your pool, so if you’re afraid of going overboard, you can opt for adding trace amounts.
What is the difference between cyanuric acid and muriatic acid?
As we’ve explained, cyanuric acid acts as sort of a sunscreen for chlorine, while muriatic acid is used to lower a pool’s pH level. Both products help to manage chlorine’s efficiency but are used for very different reasons.
What does it mean when your pool smells like chlorine?
If you’re starting to notice a strong chlorine smell, sometimes that can be a sign of chlorine lock, or too much cyanuric acid in your pool. That is, as long as you have ruled out the possibility of there being a chlorine overload.
What is cyanuric acid in pool?
When your cyanuric acid (aka pool stabilizer) levels are correct, it's a beautiful thing, maintaining and stabilizing your chlorine levels the way it should be.
What does it mean when your chlorine is too high?
When cyanuric acid levels get too high, it can cause something referred to as chlorine lock, which basically means your chlorine has been rendered useless. You’ll know it has happened when your chlorine test shows very or little chlorine even right after you’ve added it to the pool.
Why is it called a pool conditioner?
The reason it's often called a pool conditioner is that it essentially weakens the strength of chlorine a bit, making it less abrasive on swimmers and objects in the pool. But it bonds with chlorine to protect it from being broken down by the sun and makes it more effective on bacteria and algae.
How long does it take for a pool to settle?
Wait for 3 to 4 hours and test the water again. It will take a few hours for the new water to settle into the pool and for the chemistry to balance. After 3 or 4 hours, use a water test strip or a water quality test kit to check the levels of chlorine and cyanuric acid in your pool.
What should the chlorine level be in a pool?
Your pool should have a chlorine level between 2.0 and 3.0 ppm and a cyanuric acid level between 30 and 50 ppm. If these levels are right, then you shouldn’t need to do anything more to alter them.
What is cyanuric acid?
This article has been viewed 44,435 times. Learn more... Cyanuric acid is a chemical that improves the longevity and effectiveness of chlorine in an outdoor pool. Working almost like a “sunblock” for the chlorine, it protects the chlorine from becoming diluted and helps keep your pool cleaner for longer.
How long does it take for cyanuric acid to work in a pool?
Once you pour in the reducer, make sure your pool filter is running and leave it to work undisturbed for 3 to 4 hours. Test the pool water once the filter has been left to run to make sure the cyanuric acid reducer has worked. If it hasn’t, you may need to partially or completely drain your swimming pool and refill.
How to lower cyanuric acid in pool?
Dilute your pool water if the levels are above 80 ppm. The easiest way to lower the levels of cyanuric acid in your pool is to simply dilute the water. Partially drain your swimming pool by the same percentage by which you want to reduce your cyanuric levels.
How many skimmers are needed for a pool?
Some swimming pools will have more than 1 skimmer. If your pool has more than 1, pick a skimmer near the middle of the pool to pour your reducer into.
How to get rid of scale rings in pool?
If your cyanuric acid levels are too high, the easiest solution is to completely drain the pool and fill it with fresh water. Use a submersible sump pump to empty your pool completely. Take advantage of your empty pool and give it a good clean. Use a calcium, lime, and rust remover to clean away calcium or scale rings.
Why does your pool need cyanuric acid?
For the chlorine levels to be in “good shape”, cyanuric acid is needed if the sun constantly affects the water in your pool.
Why High CYA Is Bad News?
You need to be familiar with only a few reasons, and you will already be convinced that it is necessary to carefully regulate the cyanuric acid (cya) level in the pool.
What happens when CYA levels get too high?
When CYA levels get too high they can actually chemically “lock” the free chlorine in your pool. Dilution is really the most economical and practical way for most of us to rein our CYA levels back to normal and get that chlorine back to work.
What is cyanuric acid?
Often described as “sun-block” for chlorine, cyanuric acid (CYA) is most commonly found in 3-inch chlorine tablets used in maintaining swimming pools. It can also be added to pools separately in non-tablet form, most commonly to protect the free chlorine generated by ...
How to lower CYA in pool?
3 Lowering CYA, Method 1: Dilution. Dilution is easier said than done. Basically, you just have to replace a whole lot of water (with high CYA) with a whole lot of other water (without CYA). Now, if you’re in south Florida, you can naturally have your pool water diluted and replenished by the afternoon summer rains.
When do you need chlorine in a pool?
As long as you keep your eye on CYA levels throughout the rest of the year, you can depend on this natural dilution to keep your pool in check through the hottest parts of the summer, when you need chlorine the most.
How do I drain a pool?
I’ve found the easiest way to quickly drain a pool is to simply just take the top off of the filter housing. You must be careful of the flow of this much water in and around your pump area though.
How many ppm in a salt water pool?
Levels should be at 30-60 ppm in salt-water pools and 70-80 ppm in non salt-water pools. You can test these levels with most pool test strips, the Taylor test kit or by taking a water sample to your local swimming pool store.
Can you monitor CYA levels in a pool?
So now you have new fresh water in your pool and you can remember it’s a lot easier to monitor and maintain CYA levels accordingly. 3″ chlorine tablets are a staple to the pools I service but an unhealthy tablet diet is the leading cause of CYA getting unmanageable.
How to drain a pool when it's too high?
You have to drain the pool when the level is extremely high. Fill the pool back with fresh water. Backwash or replace the pool filter if necessary. Adding cyanuric acid is always an option or some chlorine products even already contain the chemical.
What is triazine in pool?
The compound is specifically called triazine which means cyanuric acid or CYA contains three nitrogen atoms and carbon atoms. Why do we need cyanuric acid? In the world of pool chemical, cyanuric acid is often called a pool stabilizer which is produced in granule or liquid.
How to lower cyanuric acid in pool?
Dilute the Water. This is the fastest way to lower cyanuric acid in pool water that you can try. It works only if the level is not really that high. You need to use the same excessive percentage of cyanuric acid level with the water.
What to do if your pool has high CYA?
Purchase the chlorine which doesn’t contain CYA, then add to the pool to prevent the high CYA level.
What is the most important thing about a swimming pool?
One of the most important keys to an enjoyable swimming pool is balanced chemicals. As a pool owner, you must have known that your pool water contains a lot of chemicals that work together to keep it look adorable and feel comfortable for everyone. Of course, keeping the level of those chemicals in the ideal range should be included in your pool ...
Does CYA kill chlorine?
Basically, CYA works to help chlorine in killing contaminants in pool water. Yes, adding chlorine alone is actually not enough to sanitize the entire pool water and sunlight is the one to blame. When your pool is exposed to excessive UV light, the amount of free chlorine (which works to sanitize the water) can be reduced due to evaporation.
Can you add cyanuric acid to chlorine?
Adding cyanuric acid is always an option or some chlorine products even already contain the chemical. But in short, CYA won’t do you wrong if you add it in the ideal range. In fact, cyanuric acid actually offers a lot of benefits for you. You can save a lot of money that you have to spend to buy more chlorine.
Why is there a delay in pool construction?
As mentioned earlier, there has been a delay in pool construction due to a shortage of fiberglass resin material. As a result, the prices of liquid vinyl ester resin and fiberglass have significantly gone up. Subsequently, many fiberglass manufacturers are turning down shell orders amid the high demand for fiberglass pools nationwide and a lack of raw materials to facilitate orders.
Why are pool shells delayed?
Pool Magazine received word from numerous builders that they had been notified by Latham that shell deliveries would be delayed up to 8 weeks because of ongoing shortages. We reached out to America’s largest manufacturer of fiberglass inground pools to see how they are handling the ongoing resin shortage.
What does Shadoan say about pool contractors?
Shadoan says, “Pool contractors should explain how these features work. They should inform their clients that lifting the stone from time to time is important . Also, let them know that walking, standing, or sitting on the lid can lead to serious accidents.”
What is a large format pool tile?
Large-format pool and spa tiles offer excellent aesthetics, functionality, and durability. As a result, they are becoming a popular tile option among most pool owners. However, before purchasing these tiles, there are several factors to consider. Also, during installation, ensure you prevent voids, control lippage, and allow proper curing.
What is mosaic in pool?
Incorporating a blend of mosaic and large-format pool and spa tiles makes the pool more appealing. The mosaic design is often meant to underscore water features or any other breathtaking areas of the pool. Co-owner of Alpentile, Amy Denny, says that they usually combine large format with mosaic in a variety of numerous projects. Doing this is also cost-effective since you get to balance your costs.
Why are automatic pool coves so popular?
These safety features protect pools from dirt and help pool owners save energy. At present, there is an increased demand for automatic covers, especially among spa owners. Indisputably, spa owners are also looking to protect their investments. Automatic spa covers are therefore becoming popular in the pool industry. The best thing about these features is that they are user-friendly; you can operate them with the simple touch of a button. Ultimately, homeowners don’t mind spending on these features.
How long does it take to get a surfboard?
Regional manager, Todd Prestage, says, “Before, it used to take approximately six weeks to get a Surf Hardware International Board. Now, it takes six months.”
How to check CYA level in pool?
Here’s how to do it: 1 Test and balance your pool water so you will know where your CYA level stands and how much you need to raise it. 2 Suit up in the proper protective equipment: eyewear, chemical-resistant gloves, and long sleeves with pants. 3 Fill up a 5 gallon bucket with warm water. 4 Measure the correct dosage of CYA for your pool by consulting the instructions on the product. In general, 13 ounces of CYA will raise a 10,000 gallon pool by 10 ppm. 5 Add the CYA to the bucket of water (never the other way around!). 6 Pour the solution directly into the pool’s skimmer. 7 Allow time for the pool to fully cycle the water, distributing the CYA. Retest and repeat this process if more is needed.
Why does my pool water drop in CYA?
This can be due to water evaporation or a large splashout that requires refilling the pool, or even if it rains.
What is the ideal cyanuric acid level for a pool?
The ideal range for cyanuric acid in your pool is between 30 and 50 ppm (parts per million). Anything lower and you will likely see some undesirable side effects when it comes to your water chemistry. Let’s talk about why this happens, why it matters, and how to raise cyanuric acid (CYA) in your swimming pool. Skip to:
What happens when chlorine levels drop?
With low CYA not protecting chlorine, the chlorine level drops. This drop makes it inadequate for keeping the water clean, causing a chain reaction that affects other areas of the water chemistry such as the pool’s pH level and total alkalinity.
Why is my pool green?
A green pool is caused by a lack of clean water, which leads to algae growth. Depending on your situation, you can also develop pink slime or black algae, both of which leave your pool a nasty shade of ugh! Water chemistry imbalance. With low CYA not protecting chlorine, the chlorine level drops.
How to dissolve granules in pool?
If using granules, add the measured amount of granules to a 5 gallon bucket of water and mix with a stir stick. Fully dissolve it so that no granules attach to the pool walls and damage the pool finish. Walk around the perimeter of the pool and pour the solution in.
What is chlorine bind?
When free chlorine binds to ammonia pollutants such as sunblock, sweat, and urine in the water, it becomes combined chlorine (chloramines). Not only is this form of chlorine a much less effective sanitizer, it also kicks up a pungent “chlorine smell”.
