So on all of our pool accounts we have signs that read “please rinse off sunscreen before entering pool or spa.”  The reason for this is because sunscreen is a oil and everyone knows oil and water don’t mix.  A little bit the filter can handle, but when you have 13 kids cover from head to toe with the stuff the filter docent stand a chance.  This past week we ran into this problem at multiple pools.  This is a picture of what to much sunscreen can do to a pool in only 48 hours.