imuscle,
Pebble-Tec pools are acid washed prior to filling and usually do not require an acid start-up unless there is still a film on the stone. Low ph, low alkalinity, can cause the deterioration of the plaster holding the stone in place and in turn cause a loss of stone. I've only seen a couple cases where chemistry has caused a loss of stone.

You don't "maintain low ph" on a startup. See http://www.swimpool.com/pdf/UCC_plaster.pdf

Thanks for the advise. But I'm hearing many other opinions from different companies and pool builders about this so it has become very confusing. The website UCC really hasn't helped much. It seems like a advertisement for a company to buy products. Thanks again.

imuscle,
If you are confused, talk to the company doing the peb-tec and ask how they want the pool start-up done. They provide the warranty and will recommend a specific start-up routine. Or provide it for your PB.

pebble-tec is acid washed prior to fill. It's pretty standard and not really one for debate. Start-ups can be standard or acid start, so yes barco, you can maintain low pH at start up. Your link is no good but I'm assuming it makes reference to something United Chemical sells based on the UCC reference. Anything they produce is horse puckey and any tech who claims to be professional knows good and well that Jock Hamilton was a kook.

Thanks everyone. And thanks repair guy, I have heard the same about UCC.

The UCC documentation for startups is pretty standard stuff...there are at least a dozen other references that repeat the same exact information if you want. Just do a google search...

Having said that...of all those links, I have never read an acid startup procedure that said to continue to add acid for a week or so after the initial dosing typically between 3 and 4 gallons per 10,000 gallons of pool water. I would be concerned about maintaining a pH of 3.0 for more than 3 or 4 days. Your chances of doing harm start to outweigh any benefit.

Thanks. It's all been taken care of. No acid needed at all. Thanks again.