Since our pool was built a few months ago, the techs have been coming by dumping jugs of acid into it every few days because the pH was rising unrelentingly. We installed an Intellichem system that is now working correctly. Our problem is that the acid tank is getting used up every two days trying to keep up with the acid demand of the pool.
The pH rises VERY quickly even when the pool is not running. For example, in 7 hours, with the pool NOT being used and NOT running, the pH went from 7.4 to 7.7. Because nothing was running, I'm surmising that the Pebble Tec surface must be leaching something that is driving up the pH. The pool builder says this is normal. Is it? Any ideas?
Second questions is, I read the startup instructions on this website, Pool Start Up Instructions for Pebble Tec and Pebble Sheen Pools - Modern Method Gunite - Houston Swimming Pool Services including Gunite, Pebble Tec, and Boulder Creation. They recommend pH 7.0-7.2 for the first month. What is the purpose of this? What happens if you don't do it?