I just bought a house with a pool and have a question about the skimmers.
It has two skimmers. The one on the left is open with basket and the one on the right is closed with a cap. Does this mean only the left is used?
For the one with the basket, there are two holes. The left hole is clear and the right hole is filled with sand. Is this correct? Do I need to vacuum the sand out of the right hole with a wet vac?