Can you add pH up and chlorine at the same time?

Asked By: Mee Eline | Last Updated: 1st March, 2020
Category: sports swimming
4.7/5 (10,645 Views . 9 Votes)
The Orderly Addition of Chemicals
If both the pH and total alkalinity levels are too high, you'll need to add pH reducer. Once you get your pH levels between 7.2 and 7.5 and your total alkalinity between 60 and 120 ppm you can move on to working on the calcium hardness and chlorine levels.

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Keeping this in view, does adding chlorine increase pH?

Using liquid chlorine raises the pH of the water. Liquid chlorine does not raise pH. When added to water, liquid chlorine (which has a pH of 13) makes HOCl (hypochlorous acid – the killing form of chlorine) and NaOH (sodium hydroxide), which raises pH. So the net effect on pH is zero (or almost zero).

Subsequently, question is, how soon can you add chlorine after acid? It is safe to swim once your chlorine levels are around 5 ppm or after 24 hours. It is always best to test first! Muriatic acid can create a hot spot of acid in the water that could potentially burn or irritate your skin. It is best to wait 30 minutes after adding it to your pool.

Also to know is, can I add pool chemicals at the same time?

Chlorine shock + Sequester Agent: Chlorine shock will also disrupt stain & scale chemicals, aka chelators or sequestering agents, if added at the same time. Add Stain & Scale chemicals a day before or several days after, shocking a pool.

Can you shock your pool and add stabilizer at the same time?

You can even get it mixed in with chlorine tablets or sticks, called trichlor, and in chlorine shock, called dichlor. These combination products are referred to as stabilized chlorine because the stabilizer is mixed right in with the sanitizer, saving you the trouble of measuring and adding them separately.

38 Related Question Answers Found

Will Shocking pool raise pH?

Chlorine based pool shock (Calcium Hypochlorite) has a high pH, and will naturally raise the pH level of your swimming pool water, in addition to changing your chlorine level. Chlorine free shock has a neutral pH, and will not affect any of your pool chemical levels.

Does rain increase pH in pool?

Rain almost immediately causes the pH (Potential Hydrogen) in the pool water to rise while also reducing the TA (Total Alkalinity) slightly via dilution. Higher pH will cause more of the chlorine in a pool to become inactive or “fall asleep” reducing it's effectiveness.

Should I adjust chlorine or pH first?

Generally speaking you adjust PH first, chlorine second, and worry about everything else more gradually. However, there are many situations where you can adjust two or more numbers at the same time if the correct combination presents it's self. For example baking soda raises TA and PH.

Does high chlorine cause low pH?

For example, free chlorine (FC) levels in excess of 10 ppm will temporarily raise pH, so it is disconcerting that you report "off the chart" FC levels but your pH is 6.8. Depending on your FC level the pH could actually be lower than what is reported.

What is the pH of pure chlorine?


At a pH of about 5, nearly all the chlorine is present as HOCl, and at pH 8.5, nearly all the chlorine is present as OCl¯. In sanitizing water, hypochlorous acid (HOCl) is 80-100 times more effective as hypochlorite ion (OCl¯).

Why does the pH in my pool keep rising?

An increase in the pH level can be caused by several things. A first cause is the addition of chlorine stabiliser or HTH Granular to the pool water. A higher pH level can also be caused by a sudden rise in temperature of the water. However, much more important than the causes are the effects of such a high pH level.

Is pool shock and chlorine the same?

1) What is the difference between chlorine and shock? 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 you over shock a pool?

Start off by adding 3 or 4 gallons, and if you see no results overnight, add 3 or 4 more gallons the next day. Continue this process until you notice the water changing color to either cloudy white, light green or clear. YOU CANNOT OVER SHOCK A POOL ! The more you add, the quicker it will clear !

Can you shock a pool too much?

If you put too much shock in the pool, simply wait it out. If you have a cover on your pool, take it off. The more sun that hits your water, the faster it will dissipate. Technically, if your free chlorine levels are holding up swimming UP TO your shock level, depending on your CYA, is safe.

Can I add shock and chlorine at the same time?


While shocking and adding algaecide is effective in getting rid of algae, it should not be done together. 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.

Can I add chlorine and muriatic acid at the same time?

Chlorine & Muriatic Acid
Perhaps most important note of all, never add chlorine and muriatic acid together in the pool. This creates a dangerous toxic gas that can have severe health consequences if inhaled.

What order do I add chemicals to my pool?

I would do chlorine first, pH second, then any order after that (because everything else changes so slowly that frequent dosing won't be necessary). Wait 30-60 min between each chemical addition.

What happens if you put too much clarifier in your pool?

What happens when you add too much clarifier is that all the little particles clump together too much an end up as a colloidal suspension. When that happens, the whole thing turns cloudy. It'll clear but it will take a while. Run the filter 24/7 until is clears.

Can you put algaecide and shock in the pool at the same time?

Shocking your pool and adding an algaecide to the water are two ways to get rid of the sickly green color caused by algae growth, but you shouldn't do these things at the same time. Chlorine combines with the algaecide ingredients and renders them useless.

Why did my pool turn green after I shocked it?


Cause. Shocking a pool should help clear up a green pool if the water is green because of algae or other issues. However, the pool may turn green after shocking, which is caused by an increased amount of dissolved copper in the water.

What time of day should I shock my pool?

The best time of day to shock pool is when the sun is down. So, experts recommend shocking your pool in the evening or at night, to make sure it does its job. Shocking during the day can be ineffective as UV rays from direct sunlight significantly reduce free chlorine levels.

How long after adding Dry Acid Can you swim?

Do not swim for 2 hours after adding acid.