Question about Intex Automatic Salt Water System for Above Ground Saltwater Pool

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High PH and ALK

My clorine is 1.6 and Ph 8, ALK 217. Can I use normal pool chemicals to lower the PH and ALK while using a Intex Salt generater? I want to be sure these chemicals don't cause any problems with the system.
One mistake I have made is to add more salt when the 91 code came on instead of checking for clogged plates first. As the 91 code came one again, 3 times in the last 1 1/2 weeks, I checked plates and they were clogged with white stuff from either salt or too much ALK.
Working fine at this time, but more salt than necessary. And water bills are nasty in this area with draught laws.

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Yes you can. You need to lower the Alkalinty by adding the Muriatic acid in colums in the deep end of the pool. Then address the ph. It will come down somewhat with the lowering of the Alkalinity.

Posted on Aug 23, 2009

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I have an above ground pool 18' round 52" deep. I purchased the intex saltwater system. I have had it run everyday for 8hrs a day and the ph is high and reads no chlorine. What to do?

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Which salt water test kit(s) would you suggest for my 18'x52'' steel sided pool. i have a Krystal Clear system model CS8110 . what do you think of the salt strip readers?

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Salt is persistent in the water - translation - once in the water, it stays there, it doesn't go away except through splash out or back wash. Your salt should be around 3200 ppm. Get rid of the metals in the water before you do anything ... get the Alk around 100 then adjust the pH and introduce your CL. Cyanuric Acid protests the CL you are making. Some places call this 'stabilizer' and the reading should be around 60 to 100 ppm. Calcium is like salt ... persistent in the water ... lost under the same circumstances.

I hope this information helps you.

Thanks for your interest in If this was helpful ... plese remember to vote and leave a comment.


Aug 02, 2010 | Intex Pool & Spa

1 Answer

The pool is still cloudy even with all chemicals balanced and a clean filter? I tried the clarifier stuff too and its still like chalky. How can i get it crystal clean?

Follow these steps ... let the CL go to zero ... add a sequestering agent to get the metal out. Follow container instructions ... run the filter 24/7 (deferring to the instructions on the sequestering agent.) When the metal is out, get your calcium to 300 ppm, get your alk to 100, get your cyanuratic acid to 70 - 90 ppm, get your pH to 7.2/7.4 and introduce 2 to 4 ppm of CL. Do this in this order over the course of 2 days. Dont dump all this stuff in at once and expect good results.

If Cal is more than 300 ppm, dump some water and add new. What is the Cal level in your fill water? Be aware of that number as you adjust.

Use Sodium Bi Carb to increase your Alk
Use Sodium Carb to increase your pH
Use dry or liquid acid to reduce Alk and/or pH as necessary

Get the Alk set first before you try to adj the pH.

The Cyanuric acid will protect your CL from the sun.

You cannot run your filter too long! Backweash only when the pressure raises 10 lbs from the new fresh startup pressure. Doing so before is wasteful of chemical and defeats the filter process.

If you are using salt, get the water as I said before you turn on the salt cell. Add salt per instructions on the bag. Use pool/food grade salt only!

I hope you find these comments helpful.

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Generators also cause the pH to rise over time so you will need to keep acid on hand to counteract that.

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