Switched to Bleach and now adding acid daily

[squib]

So I finally got my CYA down and switched to a Stenner injection pump for bleach instead of Tri-Chlor pucks.

The pump is working like a charm and keeping my FC at about 5. But now I am having to add about 16 oz of muriatic acid daily. Was hoping to not have to add chemical everyday. Is there something I can do? Last year using the Tri-Chlor pucs, my Ph was super constant. Now it creeps up to 7.8 to 8.0 seemingly every day.

BTW, my TA seems to be about 120.

 

[Kiss4aFrog]

You have your CYA down to what ??

How about a full set of results

 

[jblizzle]

Well the high TA is likely most of your problem with the pH.

 

[squib]

Cya = 40

 

[Richard320]

How old is that pool? You might still be suffering from curing plaster, you just didn't know it because trichlor is very acidic.

 

[pooldv]

CYA is good. Here is a link on how to lower your TA, aim for 70-80.

http://www.troublefreepool.com/content/129-how-to-lower-lowering-total-alkalinity

Here are your Recommended Levels

 

[squib]

How old is that pool? You might still be suffering from curing plaster, you just didn't know it because trichlor is very acidic.

vinyl pool

- - - Updated - - -

Looks like time for acid and aeration. Tons of PVC laying around. I might build a Franken-aerator.

 

[Patrick_B]

Your pH stayed lower because of the pucks. Now you have to replace that acidity with something.

 

[freetime]

I had real bad Ph bounce due to high TA when I first filled my pool, was adding MA twice a day to start with


Test daily and use poolmath to calculate correct MA dose - keep a note of this and you will see that as the TA drops the MA additions get smaller and further apart, until you get to a point where the pH doesn't rise very quick.

Just maintaining the Ph in range will lower the TA over time, repeatedly lowering Ph to 7.2 + aeration gets you there quicker. Will use the same total amount of MA either way


Thanks to Richard320 for those tips, really helped my understanding!