Etching of the pool wall surface is caused by poor water balance, usually a low calcium level.
Test your water, or bring us a sample and we will do it for you.
Add Calcium Plus as required.
Bring along 1 litre of your pool water, and we will test it for you and explain exactly what you need to do to get the water perfectly balanced. This is a free service.
Webdesign by Startap Pty Ltd