Thanks for keeping this great site. I've owned a pool in Las Vegas for 1.5 years and I've decided to start managing it myself. This site has been a great source of information.
I've been repeatedly told by everyone from my neighbors to the pool repair guy to the sales person at the pool store that everyone drains their pool every 2-3 years in Vegas. This is done to clean the pool with an acid wash, blast the calcium deposits off the tile, and to get the chemicals back in balance.
I'm wondering if this is really necessary or just what the local pool industry is telling everyone?