We have a Summer Escapes10x30. We recently added a Intex 1600gph sand filter and we bought a cover. Every since adding both of these, our water has had a funny smell to it, like an algae smell. We test the water everyday and all of the levels are normal. We add algaecide every 3 days and shock once a week. The bottom and sides of the pool are not slippery and the water is crystal clear. Could the sand in the pump or the cover be causing the smell?