Although my pillows aren't 'breaking a part' yet, they are very discolored. We can thank our ozonators for this. Some things you can do with your next set that might help slow down the process of deteriation are -
1. keeping the water level an inch or so below the lowest pillow(this helps keep the waterline below them even when you're soaking)
2. when topping off your spa, hose them down along with the underside of your cover.
3. keep the cover open after adding chems
4. opening the cover every couple of days or so whether you soak or not.