I have a question. Opened up my pool on Sunday and vacuumed to wasted pretty green pool. Started the slam process and thought I would try to vacuum the pool on recirculate although still can see bottom in deep end. I noticed dirty water coming through return jets when I vacuumed in the deep end. Lots of leaves worms ect sucked up in vacuum head. Should I still vacuum to waste? Why is the dirt coming through the return ? Sand is only one year old. Thanks