Here is some solid information on alternative pool sanitation (alternative to chlorine): http://www.poolsolutions.com/gd/alte...anitizers.html

Do you already have a water testing kit (Taylor K-2006 for example)? If your pH is very low (acidic) it can irritate your skin. Also, if you have too much CYA in the water it may be rendering your current chlorine levels ineffective. Proper chlorine dosage is dependent on your current CYA level. Here's a document and chart that explains the relationship: http://www.poolsolutions.com/gd/best...e-chart.html#a