I have an above ground pool. Well some of the pool is inground and then above ground. This pool was here when we bought our house. There is rocks around the perimeter of the pool. It’s starting to get over grown with weeds and grass. So my question is, do we need to have rocks around the pool or can I just remove the rock and let grass grow around the pool? Wasn’t sure if the rocks were for looks or there for a reason. Thanks