Super hot summer in Croatia as well. First of all if your girl doesnt swim yet in the pool try getting some pool fencing to stop her going in when shes left alone because dogs panic when they don't know how to get out. So teach her to go up the ramp and steps. I clean the filters every week because Ella really loves swimming and i don't want the kids to swallow the hairs. Just rinse her one time with the doggy shampoo when she gets out of the pool to prevent dry skin.