Muriatic Acid

[roblectric]

I have a large infinity edge pool(36000 gal) that requires 16-24 ounces of MA a day to maintain proper ph.
I have a pump with a 15 gal tank that is programmed to inject MA throughout the day. This system works
quite well with close monitoring. The MA I use is clear enough that you can't see it in the tubing used to transport
it to the pump. Is there a way to dye the MA so it can be seen in the tubing? I have tried a cobalt blue food coloring
gel that was neutralized and had no effect.Suggestions?

 

[Sunnydaze]

Interesting question and you'll probably get an answer from one of the smart people around here. I'm curious why it takes so much acid though. What is your TA and what do you keep your PH at?

 

[roblectric]

Two things that make ph a booger to control is a gunite pool and aeration. My spill over wall is stacked stone so it
acts like a cooling tower. High evaporation. TA just tested at 71ppm and 7.7 ph.

 

[cowboycasey]

I would say RIT Dye should work perfect, it should take very little to turn a blue color... it is safe and the blue would be easy to see and will not do anything to the pool water

https://smile.amazon.com/Rit-Dye-Liquid-Fabric-8-Ounce/dp/B00AQ72LF4

 

[pjt]

TA just tested at 71ppm and 7.7 ph.

How are you testing? A TA value of 71 didn't come from a recommended test kit.

Are you adding baking soda?

Allow your TA to drift down to 50, which will slow pH rise.

 

[roblectric]

Test results via pool store

 

[pjt]

Test results via pool store

Get a recommended test kit, either the TF-100 or K-2006C. Quality data is important, and you won't get that at a pool store.

Don't add any baking soda (if you are).

Fill out your signature and profile information, which will make it easier for others to help you.

 

[Flying Tivo]

What PH are you aiming for? Anything between 7-8 is fine. Unless you are targeting a specific CSI. Use PoolMath to track your test results and keep a good chemistry.
ABCs of Pool Water Chemistry