Plaster manufacturer wants 7.0-7.2 pH at start-up- why?

[mchimes]

Hey,

The manufacturer of my quartz finish (Pre Marbelite Mix Marquis) says this on their warranty page:

"Afterwards [start-up], balance the pool water to the above noted water parameters. Check the pH several times per week for the first few weeks and add pool acid pre-diluted to the deep end of the pool to lower the pH to 7.0-7.2 range or lower if needed. NEVER allow the pH to rise above 7.6 during the first 30 days. Brush the pool daily for the first 30 days, then as needed."

I know the installers did an acid wash before filling and a lot of aggregate is exposed. Should I run my pH that low when it pushes the CSI into the negative range?

Thanks,
Mike

 

[PoolGate]

Check out the below for "hot start".

Start-up New Plaster - Trouble Free Pool

The first few months are the most criticle for a newly plastered pool. We're here to share best practices to ensure the plaster will last for many years.

www.troublefreepool.com