Help! Cant get the chemical levels balanced!

KLH2399

New member
Mar 25, 2025
1
North Carolina
I have a 9x18 intex above ground pool…Indoor.

This past fall, the pool was filled by a water service. I didn’t turn on the pump/filter yet. After a couple months, I noticed that the water was starting to look a little green/brown. So I started the pump/filter with the chlorinator. The water cleared up right away. I ran it off and on just for maintenance. I never added chemicals or even checked the water at this point.



March 13…i took a sample to the pool store. I don’t remember exactly what they had me add but I do know it was calcium hardness, alkalinity, increaser, PH down, shock, and stabilizer. Sunday, I checked the water with my test strips and the colors came back so off. The chlorine was dark dark purple. And this is probably where I made a mistake. I started draining water and filling with fresh water, thinking that I needed to get some of the chlorine out. When that didn’t work, I purchased some Chem out and added that to the pool. After 12 hours, the chlorine levels were still dark purple. At this point, I didn’t really understand that the chlorine and the free chlorine were two separate things.

march 18 I took a sample to the pool store and they had me add 9 pounds of stabilizer 2 1/2 pounds of Ph decreaser, and four bags of shock. 48 hours later, I took another sample in and the readings were the same. they had me add another 9 pounds of alkalinity increaser, 2 pounds of pH decreaser, and then three bags of shock. In the meantime, I’m using my test strips to test. The test strips are still coming out the same as they have from the beginning. I decided to go to a bigger pool store and see if they might have any suggestions that the other store couldn’t tell me. I also took a sample to them. Results were the same as it had been. they had me add nine more pounds of alkalinity increaser, one and a half pounds of PH decreaser, and then seven bags of shock. I did follow the instructions when adding all of these chemicals, adding them in order and leaving the time in between that I needed to.



Right now, the test strips are reading the same as they have been. The smell of chlorine is horrible. It’s even coming into my house. I hadn’t thought to check the coordinator until someone mentioned that on the Facebook post. I did notice build up on the cells so I’m getting muriatic acid today to clean those. But I also think something else is going on.
 
I have a 9x18 intex above ground pool…Indoor.

This past fall, the pool was filled by a water service. I didn’t turn on the pump/filter yet. After a couple months, I noticed that the water was starting to look a little green/brown. So I started the pump/filter with the chlorinator. The water cleared up right away. I ran it off and on just for maintenance. I never added chemicals or even checked the water at this point.



March 13…i took a sample to the pool store. I don’t remember exactly what they had me add but I do know it was calcium hardness, alkalinity, increaser, PH down, shock, and stabilizer. Sunday, I checked the water with my test strips and the colors came back so off. The chlorine was dark dark purple. And this is probably where I made a mistake. I started draining water and filling with fresh water, thinking that I needed to get some of the chlorine out. When that didn’t work, I purchased some Chem out and added that to the pool. After 12 hours, the chlorine levels were still dark purple. At this point, I didn’t really understand that the chlorine and the free chlorine were two separate things.

march 18 I took a sample to the pool store and they had me add 9 pounds of stabilizer 2 1/2 pounds of Ph decreaser, and four bags of shock. 48 hours later, I took another sample in and the readings were the same. they had me add another 9 pounds of alkalinity increaser, 2 pounds of pH decreaser, and then three bags of shock. In the meantime, I’m using my test strips to test. The test strips are still coming out the same as they have from the beginning. I decided to go to a bigger pool store and see if they might have any suggestions that the other store couldn’t tell me. I also took a sample to them. Results were the same as it had been. they had me add nine more pounds of alkalinity increaser, one and a half pounds of PH decreaser, and then seven bags of shock. I did follow the instructions when adding all of these chemicals, adding them in order and leaving the time in between that I needed to.



Right now, the test strips are reading the same as they have been. The smell of chlorine is horrible. It’s even coming into my house. I hadn’t thought to check the coordinator until someone mentioned that on the Facebook post. I did notice build up on the cells so I’m getting muriatic acid today to clean those. But I also think something else is going on.
Welcome, even if it’s under unfortunate circumstances. You’ve just learned that test strips and pool stores have really bad testing processes And you can’t trust them. Order one of the two Taylor based test kits that we recommend here and post up the results and we can go from there. While you’re waiting for the test to arrive, you can safely add five parts per liquid chlorine to the pool to help prevent it from getting worse.
 
STOP. We can help.

You have been "Pool Stored" Ask me my username on TFP.

First. Do not clean the salt cell with acid. It is the quickest way to kill a cell. We will get to cleaning the cell shortly.

You need a test kit. Order one now. With proper testing, we will get you out of the pool store shuffle and save you $$$ in pool store chemicals.

Here are the kits we recommend. Link-->Test Kits Compared

Add 28 ounces of Liquid Chlorine per day until the kit arrives, NOTHING ELSE. Pour it slowly in front of the return, with the pump running. You can use Pool Essentials Liquid Chlorine from Walmart.

When your kit arrives, post results and we will get you fixed up.

If you want to feel part of #TeamPoolStored, read this thread while you wait for your kit to arrive...

Or peruse all the gorgeous pools we have restored...Link-->How Clear is TFP Clear?

You Got This Good Luck Today GIF by MOODMAN
 
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March 13…i took a sample to the pool store. I don’t remember exactly what they had me add but I do know it was calcium hardness, alkalinity, increaser, PH down, shock, and stabilizer.

This is infuriating. Alkalinity increaser also increases pH. pH down also lowers Alkalinity. They are asking you to add chemicals that do the opposite of each other! and they asked you multiple times!

Unfortunately, your story is not unique. Stay far away from pool stores. Throw away your test strips. Listen to the advice from PoolStored above. Forget everything you learned from the pool stores and Facebook. While waiting for your test kit feel free to start reading the Pool Care Basics pages.

 
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Welcome to TFP.

I have not seen it mentioned that indoor pools need very little stabilizer since they get no UV from the sun.

Minimum CYA/stabilizer level around 20 is fine for an indoor pool to eliminate the harshness of chlorine.
 
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